diff --git a/.gitignore b/.gitignore
index 628a4dc..7c4f084 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,4 +4,7 @@
 !.env.dev.example
 !.env.prod.example
 node_modules
-*.xml
\ No newline at end of file
+*.xml
+notification-domain/
+TODO.txt
+*.sh
\ No newline at end of file
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 278541e..d08138b 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -19,14 +19,17 @@ preparation:
     - export BUILD_ID=$(date +%Y%m%d%H%M)
     - echo "BUILD_ID=${BUILD_ID}" > context.env
 
-    - echo "FLIGHTS_INFO_PROD_IMAGE_NAME=${IMAGE_BASE}/flights-information:prod-${BUILD_ID}"       >> context.env
-    - echo "FLIGHTS_INFO_TEST_IMAGE_NAME=${IMAGE_BASE}/flights-information:test-${BUILD_ID}"       >> context.env
+    - echo "FLIGHTS_INFO_PROD_IMAGE_NAME=${IMAGE_BASE}/flights-information:prod-${BUILD_ID}" >> context.env
+    - echo "FLIGHTS_INFO_TEST_IMAGE_NAME=${IMAGE_BASE}/flights-information:test-${BUILD_ID}" >> context.env
 
-    - echo "GATEWAY_PROD_IMAGE_NAME=${IMAGE_BASE}/gateway:prod-${BUILD_ID}"       >> context.env
-    - echo "GATEWAY_TEST_IMAGE_NAME=${IMAGE_BASE}/gateway:test-${BUILD_ID}"       >> context.env
+    - echo "GATEWAY_PROD_IMAGE_NAME=${IMAGE_BASE}/gateway:prod-${BUILD_ID}" >> context.env
+    - echo "GATEWAY_TEST_IMAGE_NAME=${IMAGE_BASE}/gateway:test-${BUILD_ID}" >> context.env
 
-    - echo "USER_MANAGER_PROD_IMAGE_NAME=${IMAGE_BASE}/user-manager:prod-${BUILD_ID}"       >> context.env
-    - echo "USER_MANAGER_TEST_IMAGE_NAME=${IMAGE_BASE}/user-manager:test-${BUILD_ID}"       >> context.env
+    - echo "USER_MANAGER_PROD_IMAGE_NAME=${IMAGE_BASE}/user-manager:prod-${BUILD_ID}" >> context.env
+    - echo "USER_MANAGER_TEST_IMAGE_NAME=${IMAGE_BASE}/user-manager:test-${BUILD_ID}" >> context.env
+
+    - echo "SUBSCRIPTION_PROD_IMAGE_NAME=${IMAGE_BASE}/screens-client:prod-${BUILD_ID}" >> context.env
+    - echo "SUBSCRIPTION_TEST_IMAGE_NAME=${IMAGE_BASE}/screens-client:test-${BUILD_ID}" >> context.env
 
     - echo "SCREEN_CLIENT_PROD_IMAGE_NAME=${IMAGE_BASE}/screens-client:prod-${BUILD_ID}" >> context.env
     - echo "SCREEN_CLIENT_TEST_IMAGE_NAME=${IMAGE_BASE}/screens-client:test-${BUILD_ID}" >> context.env
@@ -41,11 +44,20 @@ preparation:
     - echo "KIBANA_PROD_IMAGE_NAME=${IMAGE_BASE}/kibana:prod-${BUILD_ID}" >> context.env
     - echo "LOGSTASH_PROD_IMAGE_NAME=${IMAGE_BASE}/logstash:prod-${BUILD_ID}" >> context.env
 
-    - echo "DOCKER_HUB_SCREEN_CLIENT_IMAGE=$DOCKER_HUB_USER/screens-client:${BUILD_ID}"         >> context.env
-    - echo "DOCKER_HUB_BROWSER_CLIENT_IMAGE=$DOCKER_HUB_USER/browser-client:${BUILD_ID}"         >> context.env
-    - echo "DOCKER_HUB_GATEWAY_IMAGE=$DOCKER_HUB_USER/gateway:${BUILD_ID}"         >> context.env
-    - echo "DOCKER_HUB_USER_MANAGER_IMAGE=$DOCKER_HUB_USER/user-manager:${BUILD_ID}"         >> context.env
-    - echo "DOCKER_HUB_FLIGHT_INFO_IMAGE=$DOCKER_HUB_USER/flights-information:${BUILD_ID}"         >> context.env
+    - echo "ELK_SETUP_PROD_IMAGE_NAME=${IMAGE_BASE}/elk-setup:prod-${BUILD_ID}" >> context.env
+    - echo "ELK_PROD_IMAGE_NAME=${IMAGE_BASE}/elasticsearch:prod-${BUILD_ID}" >> context.env
+    - echo "HEARTBEAT_PROD_IMAGE_NAME=${IMAGE_BASE}/heartbeat:prod-${BUILD_ID}" >> context.env
+    - echo "CURATOR_PROD_IMAGE_NAME=${IMAGE_BASE}/curator:prod-${BUILD_ID}" >> context.env
+    - echo "KIBANA_PROD_IMAGE_NAME=${IMAGE_BASE}/kibana:prod-${BUILD_ID}" >> context.env
+    - echo "LOGSTASH_PROD_IMAGE_NAME=${IMAGE_BASE}/logstash:prod-${BUILD_ID}" >> context.env
+
+    - echo "DOCKER_HUB_SCREEN_CLIENT_IMAGE=$DOCKER_HUB_USER/screens-client:${BUILD_ID}" >> context.env
+    - echo "DOCKER_HUB_BROWSER_CLIENT_IMAGE=$DOCKER_HUB_USER/browser-client:${BUILD_ID}" >> context.env
+    - echo "DOCKER_HUB_GATEWAY_IMAGE=$DOCKER_HUB_USER/gateway:${BUILD_ID}" >> context.env
+    - echo "DOCKER_HUB_SUBSCRIPTION_IMAGE=$DOCKER_HUB_USER/subs-manager:${BUILD_ID}" >> context.env
+    - echo "DOCKER_HUB_USER_MANAGER_IMAGE=$DOCKER_HUB_USER/user-manager:${BUILD_ID}" >> context.env
+    - echo "DOCKER_HUB_FLIGHT_INFO_IMAGE=$DOCKER_HUB_USER/flights-information:${BUILD_ID}" >> context.env
+    
 
     - echo "ENV_DEV_FILE=$(echo $ENV_DEV)"     >> context.env
     - echo "ENV_PROD_FILE=$(echo $ENV_PROD)"   >> context.env
@@ -127,6 +139,25 @@ build-screen-client:
     - job: preparation
       artifacts: true
 
+build-subscription-api:
+  stage: build
+  tags:
+    - dev
+  script:
+    - export $(cat context.env | xargs)
+
+    - export SUBSCRIPTION_MANAGER=subscription-domain/subscription-manager
+    - docker build $SUBSCRIPTION_MANAGER -f $SUBSCRIPTION_MANAGER/Dockerfile.prod -t ${SUBSCRIPTION_PROD_IMAGE_NAME}
+    - docker build $SUBSCRIPTION_MANAGER -f $SUBSCRIPTION_MANAGER/Dockerfile.test --build-arg "BASE_IMAGE=$SUBSCRIPTION_PROD_IMAGE_NAME" -t ${SUBSCRIPTION_TEST_IMAGE_NAME}
+
+    - docker login -u $CI_REGISTRY_USER --password $CI_JOB_TOKEN $CI_REGISTRY
+
+    - docker push ${SUBSCRIPTION_PROD_IMAGE_NAME}
+    - docker push ${SUBSCRIPTION_TEST_IMAGE_NAME}
+  needs:
+    - job: preparation
+      artifacts: true
+
 build-gateway:
   stage: build
   tags:
@@ -203,6 +234,35 @@ test-auth-api:
     - job: build-auth-api
       artifacts: true
 
+test-subscription-api:
+  stage: test
+  tags:
+    - dev
+  script:
+    - export $(cat context.env | xargs)
+
+    - export API_IMAGE=$SUBSCRIPTION_TEST_IMAGE_NAME
+    - export CLIENT_IMAGE=dummy-image
+
+    - docker login -u $CI_REGISTRY_USER --password $CI_JOB_TOKEN $CI_REGISTRY
+
+    - docker compose -f subscription-domain/docker-compose.yml --env-file $ENV_DEV_FILE down
+    - docker compose -f subscription-domain/docker-compose.yml --env-file $ENV_DEV_FILE pull
+    - docker compose -f subscription-domain/docker-compose.yml --env-file $ENV_DEV_FILE up --abort-on-container-exit --renew-anon-volumes
+    - docker cp fids_subscriptions_api:/usr/src/app/coverage.xml .
+    - docker cp fids_subscriptions_api:/usr/src/app/report.xml .
+  artifacts:
+    when: always
+    paths:
+      - coverage.xml
+      - report.xml
+    reports:
+      junit: report.xml
+  needs:
+    - job: preparation
+    - job: build-subscription-api
+      artifacts: true
+
 test-flights-api:
   stage: test
   tags:
@@ -342,12 +402,15 @@ deliver-dockerhub:
     - docker compose -f flights-domain/docker-compose.yml --env-file $ENV_DEV_FILE down
     - export API_IMAGE=$USER_MANAGER_TEST_IMAGE_NAME
     - docker compose -f auth-domain/docker-compose.yml --env-file $ENV_DEV_FILE down
+    - export API_IMAGE=$SUBSCRIPTION_TEST_IMAGE_NAME
+    - docker compose -f subscription-domain/docker-compose.yml --env-file $ENV_DEV_FILE down
     - export API_IMAGE=$GATEWAY_TEST_IMAGE_NAME
     - docker compose -f gateway/docker-compose.yml --env-file $ENV_DEV_FILE down
 
     - docker tag $FLIGHTS_INFO_PROD_IMAGE_NAME $DOCKER_HUB_FLIGHT_INFO_IMAGE
     - docker tag $USER_MANAGER_PROD_IMAGE_NAME $DOCKER_HUB_USER_MANAGER_IMAGE
     - docker tag $GATEWAY_PROD_IMAGE_NAME $DOCKER_HUB_GATEWAY_IMAGE
+    - docker tag $SUBSCRIPTION_PROD_IMAGE_NAME $DOCKER_HUB_SUBSCRIPTION_IMAGE
     - docker tag $BROWSER_CLIENT_PROD_IMAGE_NAME $DOCKER_HUB_BROWSER_CLIENT_IMAGE
     - docker tag $SCREEN_CLIENT_PROD_IMAGE_NAME $DOCKER_HUB_SCREEN_CLIENT_IMAGE
 
@@ -360,6 +423,7 @@ deliver-dockerhub:
 
     - docker push $DOCKER_HUB_FLIGHT_INFO_IMAGE
     - docker push $DOCKER_HUB_USER_MANAGER_IMAGE
+    - docker push $DOCKER_HUB_SUBSCRIPTION_IMAGE
     - docker push $DOCKER_HUB_GATEWAY_IMAGE
     - docker push $DOCKER_HUB_BROWSER_CLIENT_IMAGE
     - docker push $DOCKER_HUB_SCREEN_CLIENT_IMAGE
@@ -409,6 +473,12 @@ deploy-prod:
     - docker compose -f auth-domain/docker-compose.yml --env-file $ENV_PROD_FILE exec usermanager-api python manage.py recreate_db
     - docker compose -f auth-domain/docker-compose.yml --env-file $ENV_PROD_FILE exec usermanager-api python manage.py seed_db
 
+    - export API_IMAGE=$DOCKER_HUB_SUBSCRIPTION_IMAGE
+    - docker compose -f subscription-domain/docker-compose.yml --env-file $ENV_PROD_FILE stop
+    - docker compose -f subscription-domain/docker-compose.yml --env-file $ENV_PROD_FILE rm -f
+    - docker compose -f subscription-domain/docker-compose.yml --env-file $ENV_PROD_FILE pull
+    - docker compose -f subscription-domain/docker-compose.yml --env-file $ENV_PROD_FILE up -d
+
     - export API_IMAGE=$DOCKER_HUB_GATEWAY_IMAGE
     - docker compose -f gateway/docker-compose.yml --env-file $ENV_PROD_FILE stop
     - docker compose -f gateway/docker-compose.yml --env-file $ENV_PROD_FILE rm -f
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 6591b4e..97783b8 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -13,4 +13,4 @@ repos:
     rev: 5.12.0
     hooks:
       - id: isort
-        args: ['--src-path', 'flights-domain/flights-information/src', 'auth-domain/user-manager/src', 'gateway/src']
+        args: ['--src-path', 'flights-domain/flights-information/src', 'auth-domain/user-manager/src', 'gateway/src', 'subscription-domain/subscription-manager/src']
diff --git a/README.md b/README.md
index 3c08ea9..9b9ffdf 100644
--- a/README.md
+++ b/README.md
@@ -18,6 +18,10 @@ Contiene `flights-information` con su base de datos. Maneja todo lo relacionado
 
 PWA pensada para utilizarse en un aeropuerto. Se maneja con un solo `origin` y con el query param `lastUpdated` para pedir cambios. Esta tiene una base datos para cachear los resultados y poder funcionar offline.
 
+### subscription-domain
+
+Contiene `subscription-manager` con su base de datos. Maneja todo lo relacionado a la suscripción de los usuarios, junto con el envío de notificaciones.
+
 ### gateway
 
 API gateway encargada de exponer los servicios. Maneja autenticación usando el `auth-domain`.
diff --git a/auth-domain/user-manager/manage.py b/auth-domain/user-manager/manage.py
index 7109b91..311468e 100644
--- a/auth-domain/user-manager/manage.py
+++ b/auth-domain/user-manager/manage.py
@@ -17,6 +17,7 @@ def recreate_db():
 @cli.command("seed_db")
 def seed_db():
     db.session.add(User(username="lufthansa", email="info@lufthansa.com", password="password1234", airline=True))
+    db.session.add(User(username="ryanair", email="info@ryanair.com", password="password1234", airline=True))
     db.session.add(User(username="messi", email="messi@gmail.com", password="password1234"))
     db.session.commit()
 
diff --git a/browser-domain/src/hooks/useAuthenticateUser.test.tsx b/browser-domain/src/hooks/useAuthenticateUser.test.tsx
deleted file mode 100644
index 2bc7eb9..0000000
--- a/browser-domain/src/hooks/useAuthenticateUser.test.tsx
+++ /dev/null
@@ -1,66 +0,0 @@
-const mockedUsedNavigate = jest.fn();
-
-jest.mock("react-router-dom", () => ({
-	...jest.requireActual("react-router-dom"),
-	useNavigate: () => mockedUsedNavigate,
-}));
-
-import "../matchMedia.mock";
-import { act, renderHook } from "@testing-library/react";
-import { useAuthenticateUser } from "./useAuthenticateUser";
-
-describe("UseAuthenticateUser Hook Test", () => {
-	afterEach(() => {
-		localStorage.removeItem("token");
-	});
-
-	test("Hook initial state", async () => {
-		const { result } = renderHook(() => useAuthenticateUser());
-		expect(result.current.isLoading).toBeFalsy();
-		expect(result.current.error).toBeNull();
-	});
-
-	test("Hook fetch state - Authenticate function - Promise not resolved", async () => {
-		const { result } = renderHook(() => useAuthenticateUser());
-
-		act(() => {
-			result.current.authenticate({
-				email: "martin@gmail.com",
-				password: "password1234",
-			});
-		});
-
-		expect(result.current.isLoading).toBeTruthy();
-		expect(result.current.error).toBeNull();
-	});
-
-	test("Hook fetch state - Authenticate function - Promise success", async () => {
-		const { result } = renderHook(() => useAuthenticateUser());
-
-		await act(async () => {
-			await result.current.authenticate({
-				email: "martin@gmail.com",
-				password: "password1234",
-			});
-		});
-
-		expect(localStorage.getItem("token")).not.toBeNull();
-		expect(result.current.isLoading).toBeFalsy();
-		expect(result.current.error).not.toBeNull();
-	});
-
-	test("Hook fetch state - Authenticate function - Promise failed", async () => {
-		const { result } = renderHook(() => useAuthenticateUser());
-
-		await act(async () => {
-			await result.current.authenticate({
-				email: "notExistingUser",
-				password: "notExistingUser",
-			});
-		});
-
-		expect(localStorage.getItem("token")).toBe("undefined");
-		expect(result.current.isLoading).toBeFalsy();
-		expect(result.current.error).not.toBeNull();
-	});
-});
diff --git a/browser-domain/src/hooks/useAuthenticateUser.tsx b/browser-domain/src/hooks/useAuthenticateUser.tsx
deleted file mode 100644
index f9ff993..0000000
--- a/browser-domain/src/hooks/useAuthenticateUser.tsx
+++ /dev/null
@@ -1,80 +0,0 @@
-import React, { useEffect } from "react";
-import { useState } from "react";
-import { Credentials, User, TokenData } from "../Types";
-import { useNavigate } from "react-router-dom";
-import { fetchUserById, logIn } from "../Api";
-import { tokenStatus } from "../Api";
-import jwt_decode from "jwt-decode";
-
-export const useAuthenticateUser = () => {
-	const [isLoading, setIsLoading] = useState(false);
-	const [isAirline, setIsAirline] = useState(false);
-	const [user, setUser] = useState<User | null>(null);
-	const [error, setError] = useState<string | null>(null);
-    const [tokenValidated, setTokenValidated] = useState(false);
-
-	const navigate = useNavigate();
-
-	const authenticate = async (credentials: Credentials): Promise<void> => {
-		if (!user) {
-			try {
-				setIsLoading(true);
-				setError(null);
-
-				const tokens = await logIn(credentials);
-				localStorage.setItem("token", tokens.access_token);
-                const airline = (jwt_decode(tokens.access_token) as TokenData).airline;
-                setIsAirline(airline)
-
-				if (tokens.user_id) {
-					const user = await fetchUserById(tokens.user_id);
-					setUser(user);
-				} else {
-					setError(tokens.message!.split(".")[0] + ".");
-					setUser(null);
-				}
-			} catch (error) {
-				setError(error as string);
-			} finally {
-				setIsLoading(false);
-                navigate("/home")
-			}
-		}
-	};
-
-	const validateToken = async () => {
-		try {
-			setIsLoading(true);
-			const existingToken = localStorage.getItem("token");
-			if (existingToken && !tokenValidated) {
-				const response = await tokenStatus(existingToken);
-
-				const { message } = response;
-				if (message) throw new Error("Invalid token");
-
-                const airline = (jwt_decode(existingToken) as TokenData).airline;
-                setIsAirline(airline)
-
-				const user = await fetchUserById(response.id);
-				setUser(user);
-			}
-
-            setTokenValidated(true);
-		} catch (error) {
-			logout();
-		} finally {
-			setIsLoading(false);
-        }
-
-        return user;
-	};
-
-	const logout = () => {
-		localStorage.removeItem("token");
-		setUser(null);
-        setTokenValidated(false)
-		navigate("/login");
-	};
-
-	return { user, isLoading, authenticate, validateToken, isAirline, logout, error };
-};
diff --git a/browser-domain/src/useAuth.tsx b/browser-domain/src/useAuth.tsx
index 6861fb1..9417c86 100644
--- a/browser-domain/src/useAuth.tsx
+++ b/browser-domain/src/useAuth.tsx
@@ -37,9 +37,15 @@ import jwt_decode from "jwt-decode";
     useEffect(() => {
         const existingToken = localStorage.getItem("token");
         if (existingToken) {
-            const airline = (jwt_decode(existingToken) as TokenData).airline;
-            setIsAirline(airline)
-
+            let airline
+            try {
+                airline = (jwt_decode(existingToken) as TokenData).airline;
+                setIsAirline(airline)
+            } catch (err) {
+                setLoadingInitial(false);
+                logout()
+                return;
+            }
 
             tokenStatus(existingToken)
             .then((res) => fetchUserById(res.id)
@@ -47,7 +53,10 @@ import jwt_decode from "jwt-decode";
                 .catch((_error) => {})
                 .finally(() => setLoadingInitial(false))
             )
-            .catch((_error) => {})
+            .catch((_error) => {
+                setLoadingInitial(false)
+                logout()
+            })
             // .finally(() => setLoadingInitial(false));
         } else {
             setLoadingInitial(false)
diff --git a/flights-domain/docker-compose.yml b/flights-domain/docker-compose.yml
index 5722366..393bf2d 100644
--- a/flights-domain/docker-compose.yml
+++ b/flights-domain/docker-compose.yml
@@ -21,6 +21,7 @@ services:
         condition: service_healthy
     networks:
       - flights
+      - subscriptions
 
   flights-api-db: 
     container_name: fids_flights_db
@@ -42,5 +43,8 @@ services:
       - flights
 
 networks:
+  subscriptions:
+    name: subscription-domain_subscriptions
+    external: true
   flights:
     driver: bridge
\ No newline at end of file
diff --git a/flights-domain/flights-information/requirements.txt b/flights-domain/flights-information/requirements.txt
index d396de1..eb2fac7 100644
--- a/flights-domain/flights-information/requirements.txt
+++ b/flights-domain/flights-information/requirements.txt
@@ -3,4 +3,5 @@ fastapi[all]==0.103.2
 psycopg2-binary==2.9.5
 pyjwt==2.6.0
 gunicorn==20.1.0
-sqlalchemy==2.0.22
\ No newline at end of file
+sqlalchemy==2.0.22
+asyncreq==0.0.4
\ No newline at end of file
diff --git a/flights-domain/flights-information/src/api/config.py b/flights-domain/flights-information/src/api/config.py
new file mode 100644
index 0000000..65f9891
--- /dev/null
+++ b/flights-domain/flights-information/src/api/config.py
@@ -0,0 +1 @@
+API_MESSAGES = "http://fids_subscriptions_api:5000/messages"
diff --git a/flights-domain/flights-information/src/api/cruds/flight.py b/flights-domain/flights-information/src/api/cruds/flight.py
index afbeb38..130be7c 100644
--- a/flights-domain/flights-information/src/api/cruds/flight.py
+++ b/flights-domain/flights-information/src/api/cruds/flight.py
@@ -22,6 +22,7 @@ def create_flight(db: Session, flight: FlightPydantic):
         departure_time=flight.departure_time,
         arrival_time=flight.arrival_time,
         gate=flight.gate,
+        user_id=flight.user_id,
     )
     db.add(db_flight)
     db.commit()
@@ -33,8 +34,10 @@ def update_flight_status(db: Session, status, id):
     db_flight = db.query(Flight).filter(Flight.id == id).first()
     if db_flight is None:
         raise KeyError
+    if db_flight.user_id != status.user_id:
+        raise PermissionError
 
-    setattr(db_flight, "status", status)
+    setattr(db_flight, "status", status.status)
     setattr(db_flight, "last_updated", func.now())
     db.commit()
     db.refresh(db_flight)
diff --git a/flights-domain/flights-information/src/api/models/flight.py b/flights-domain/flights-information/src/api/models/flight.py
index 4c7d999..3caa661 100644
--- a/flights-domain/flights-information/src/api/models/flight.py
+++ b/flights-domain/flights-information/src/api/models/flight.py
@@ -16,12 +16,4 @@ class Flight(Base):
     arrival_time = Column(DateTime, nullable=False)
     gate = Column(String, nullable=True)
     last_updated = Column(DateTime, default=func.now(), nullable=False)
-
-    # def get_departure_time(self, format="%Y-%m-%d %I:%M %p"):
-    #     return self.departure_time.strftime(format)
-
-    # def get_arrival_time(self, format="%Y-%m-%d %I:%M %p"):
-    #     return self.arrival_time.strftime(format)
-
-    # def get_last_updated(self, format="%Y-%m-%d %I:%M %p"):
-    #     return self.last_updated.strftime(format)
+    user_id = Column(Integer, nullable=False)
diff --git a/flights-domain/flights-information/src/api/routes/flights.py b/flights-domain/flights-information/src/api/routes/flights.py
index 262ee84..cb7c178 100644
--- a/flights-domain/flights-information/src/api/routes/flights.py
+++ b/flights-domain/flights-information/src/api/routes/flights.py
@@ -1,8 +1,10 @@
 from typing import Optional
 
-from fastapi import APIRouter, Depends, HTTPException
+from asyncreq import request
+from fastapi import APIRouter, BackgroundTasks, Depends, HTTPException
 from sqlalchemy.orm import Session
 
+from src.api.config import API_MESSAGES
 from src.api.cruds import flight as flight_crud
 from src.api.db import get_db
 from src.api.schemas.flight import Flight, FlightCreate, FlightStatusUpdate
@@ -24,8 +26,26 @@ def create_flight(flight: FlightCreate, db: Session = Depends(get_db)):
 
 
 @router.patch("/{id}", response_model=Flight)
-def update_flight(id: int, status: FlightStatusUpdate, db: Session = Depends(get_db)):
-    return flight_crud.update_flight_status(db=db, id=id, status=status.status)
+async def update_flight(
+    id: int,
+    status: FlightStatusUpdate,
+    background_tasks: BackgroundTasks,
+    db: Session = Depends(get_db),
+):
+    try:
+        db_flight = flight_crud.update_flight_status(db=db, id=id, status=status)
+    except PermissionError:
+        raise HTTPException(status_code=401, detail="Unauthorized")
+    except KeyError:
+        raise HTTPException(status_code=404, detail="Flight not found")
+
+    msg = status.model_dump()
+    msg["id"] = id
+    msg["flight_code"] = db_flight.flight_code
+    msg["origin"] = db_flight.origin
+    msg["destination"] = db_flight.destination
+    background_tasks.add_task(request, API_MESSAGES, "POST", json=msg)
+    return db_flight
 
 
 @router.get("", response_model=list[Flight])
diff --git a/flights-domain/flights-information/src/api/schemas/flight.py b/flights-domain/flights-information/src/api/schemas/flight.py
index 10ca2b5..387a0be 100644
--- a/flights-domain/flights-information/src/api/schemas/flight.py
+++ b/flights-domain/flights-information/src/api/schemas/flight.py
@@ -12,6 +12,7 @@ class Flight(BaseModel):
     departure_time: str
     arrival_time: str
     gate: str = None
+    user_id: int
     # last_updated: str
 
     # @validator("departure_time", "arrival_time", "last_updated", pre=True, always=True)
@@ -30,7 +31,9 @@ class FlightCreate(BaseModel):
     departure_time: str
     arrival_time: str
     gate: str = None
+    user_id: int
 
 
 class FlightStatusUpdate(BaseModel):
     status: str
+    user_id: int
diff --git a/flights-domain/flights-information/src/tests/conftest.py b/flights-domain/flights-information/src/tests/conftest.py
index f75c3a9..42da4c1 100644
--- a/flights-domain/flights-information/src/tests/conftest.py
+++ b/flights-domain/flights-information/src/tests/conftest.py
@@ -30,6 +30,7 @@ def create_flight():
             departure_time=flight.departure_time,
             arrival_time=flight.arrival_time,
             gate=flight.gate,
+            user_id=flight.user_id,
         )
         session.add(db_flight)
         session.commit()
@@ -80,6 +81,7 @@ flights = [
         departure_time=datetime(2023, 10, 23, 12, 0, 0),
         arrival_time=datetime(2023, 10, 24, 12, 0, 0),
         gate="10",
+        user_id=1,
     ),
     Flight(
         flight_code="ABC124",
@@ -89,6 +91,7 @@ flights = [
         departure_time=datetime(2023, 10, 24, 12, 0, 0),
         arrival_time=datetime(2023, 10, 25, 12, 0, 0),
         gate="10",
+        user_id=1,
     ),
     Flight(
         flight_code="XYZ789",
@@ -98,6 +101,7 @@ flights = [
         departure_time=datetime(2023, 10, 25, 14, 30, 0),
         arrival_time=datetime(2023, 10, 25, 18, 45, 0),
         gate="5",
+        user_id=1,
     ),
     Flight(
         flight_code="DEF456",
@@ -107,5 +111,6 @@ flights = [
         departure_time=datetime(2023, 10, 26, 9, 15, 0),
         arrival_time=datetime(2023, 10, 26, 11, 30, 0),
         gate="7",
+        user_id=1,
     ),
 ]
diff --git a/flights-domain/flights-information/src/tests/functional/flights_functional_test.py b/flights-domain/flights-information/src/tests/functional/flights_functional_test.py
index ba5d347..6e8e3e9 100644
--- a/flights-domain/flights-information/src/tests/functional/flights_functional_test.py
+++ b/flights-domain/flights-information/src/tests/functional/flights_functional_test.py
@@ -1,6 +1,7 @@
 import json
 from datetime import datetime
 
+from fastapi import BackgroundTasks
 from fastapi.testclient import TestClient
 
 from src.api.main import app
@@ -17,6 +18,7 @@ creating_flight = {
     "departure_time": datetime(2023, 10, 23, 12, 0, 0).isoformat(),
     "arrival_time": datetime(2023, 10, 24, 12, 0, 0).isoformat(),
     "gate": "10",
+    "user_id": 1,
 }
 
 
@@ -32,11 +34,18 @@ def test_post_flight(test_database, get_flight):
     assert db_retrieved_flight.flight_code == creating_flight["flight_code"]
 
 
-def test_patch_flight(test_database, create_flight, flight_to_create):
+def add_task(self, func, *args, **kwargs) -> None:
+    return None
+
+
+def test_patch_flight(test_database, create_flight, flight_to_create, monkeypatch):
+    monkeypatch.setattr(BackgroundTasks, "add_task", add_task)
+
     test_database.query(Flight).delete()
     created_flight = create_flight(flight_to_create)
     api_call_retrieved_flight = client.patch(
-        f"/flights/{created_flight.id}", data=json.dumps({"status": "on-boarding"})
+        f"/flights/{created_flight.id}",
+        data=json.dumps({"status": "on-boarding", "user_id": 1}),
     )
     assert api_call_retrieved_flight.status_code == 200
     api_call_retrieved_flight_data = api_call_retrieved_flight.json()
diff --git a/flights-domain/flights-information/src/tests/test_flights.py b/flights-domain/flights-information/src/tests/test_flights.py
index bcb3162..f27308b 100644
--- a/flights-domain/flights-information/src/tests/test_flights.py
+++ b/flights-domain/flights-information/src/tests/test_flights.py
@@ -15,6 +15,7 @@ mocked_flight = {
     "departure_time": "2023-10-10 10:00 AM",
     "arrival_time": "2023-10-10 12:00 PM",
     "gate": "A2",
+    "user_id": 1,
 }
 
 
diff --git a/flights-domain/flights-information/src/tests/unit/flights_unit_test.py b/flights-domain/flights-information/src/tests/unit/flights_unit_test.py
index 62f0753..05cff7b 100644
--- a/flights-domain/flights-information/src/tests/unit/flights_unit_test.py
+++ b/flights-domain/flights-information/src/tests/unit/flights_unit_test.py
@@ -13,6 +13,7 @@ mocked_flight = {
     "departure_time": "2023-10-10 10:00 AM",
     "arrival_time": "2023-10-10 12:00 PM",
     "gate": "A2",
+    "user_id": 1,
 }
 
 
diff --git a/flights-domain/run_tests.sh b/flights-domain/run_tests.sh
deleted file mode 100755
index baad313..0000000
--- a/flights-domain/run_tests.sh
+++ /dev/null
@@ -1,10 +0,0 @@
-#!/bin/bash -e 
-
-FLIGHTS_INFO_PROD_IMAGE_NAME=flights-information:prod
-FLIGHTS_INFO_TEST_IMAGE_NAME=flights-information:test
-FLIGHTS_INFORMATION=flights-information
-
-sudo docker build $FLIGHTS_INFORMATION -f $FLIGHTS_INFORMATION/Dockerfile.prod -t ${FLIGHTS_INFO_PROD_IMAGE_NAME}
-sudo docker build $FLIGHTS_INFORMATION -f $FLIGHTS_INFORMATION/Dockerfile.test --build-arg "BASE_IMAGE=$FLIGHTS_INFO_PROD_IMAGE_NAME" -t ${FLIGHTS_INFO_TEST_IMAGE_NAME}
-sudo docker compose -f flights-domain/docker-compose.yml --env-file $FLIGHTS_INFORMATION/.env.dev up 
-
diff --git a/gateway/docker-compose.yml b/gateway/docker-compose.yml
index 9dfe313..7ba24ef 100644
--- a/gateway/docker-compose.yml
+++ b/gateway/docker-compose.yml
@@ -21,20 +21,20 @@ services:
     networks:
       - auth
       - flights
-      - gateway
+      - gateways
+      - subscriptions
       - elk
-    # logging:
-    #   driver: gelf
-    #   options:
-    #     gelf-address: "udp://fids_logstash:12201"
 
-networks: 
+networks:
   auth:
     name: auth-domain_auth
     external: true
   flights:
     name: flights-domain_flights
     external: true
+  subscriptions:
+    name: subscription-domain_subscriptions
+    external: true
   elk:
     name: observability_elk
     external: true
diff --git a/gateway/requirements.txt b/gateway/requirements.txt
index ab34e30..813de4c 100644
--- a/gateway/requirements.txt
+++ b/gateway/requirements.txt
@@ -3,5 +3,5 @@ fastapi[all]==0.103.2
 pyjwt==2.6.0
 gunicorn==20.1.0
 requests==2.31.0
-aiohttp==3.8.6
+asyncreq==0.0.4
 graypy
\ No newline at end of file
diff --git a/gateway/src/api/config.py b/gateway/src/api/config.py
index cbe42e8..65a0150 100644
--- a/gateway/src/api/config.py
+++ b/gateway/src/api/config.py
@@ -2,3 +2,6 @@ API_USERS = "http://fids_usermanager_api:5000/users"
 API_FLIGHTS = "http://fids_flights_api:5000/flights"
 API_AUTH = "http://fids_usermanager_api:5000/auth"
 LOGS_UPD = "udp://fids_logstash:12201"
+API_SUBSCRIPTIONS = "http://fids_subscriptions_api:5000/subscriptions"
+API_NOTIFICATIONS = "http://fids_subscriptions_api:5000/notifications"
+API_MESSAGES = "http://fids_subscriptions_api:5000/messages"
diff --git a/gateway/src/api/main.py b/gateway/src/api/main.py
index 48dbe4e..fbe1f3e 100644
--- a/gateway/src/api/main.py
+++ b/gateway/src/api/main.py
@@ -1,7 +1,8 @@
 from fastapi import FastAPI
 from fastapi.middleware.cors import CORSMiddleware
 
-from src.api.routes import auth, flights, health, users
+from src.api.routes import (auth, flights, health, notifications,
+                            subscriptions, users)
 
 import logging
 import graypy
@@ -20,6 +21,8 @@ app.include_router(flights.router, prefix="/flights")
 app.include_router(health.router, prefix="/health")
 app.include_router(auth.router, prefix="/auth")
 app.include_router(users.router, prefix="/users")
+app.include_router(subscriptions.router, prefix="/subscriptions")
+app.include_router(notifications.router, prefix="/notifications")
 app.add_middleware(
     CORSMiddleware,
     allow_origins=[
diff --git a/gateway/src/api/routes/auth.py b/gateway/src/api/routes/auth.py
index 3ab09cf..083fa99 100644
--- a/gateway/src/api/routes/auth.py
+++ b/gateway/src/api/routes/auth.py
@@ -1,11 +1,11 @@
 from typing import Annotated
 
+from asyncreq import request
 from fastapi import APIRouter, Header, HTTPException
 
 from src.api.config import API_AUTH
 from src.api.schemas.auth import RefreshToken, Token
 from src.api.schemas.user import UserLogin, UserMin, UserRegister
-from src.api.utils.network import request
 
 router = APIRouter()
 
diff --git a/gateway/src/api/routes/flights.py b/gateway/src/api/routes/flights.py
index 85d1fb4..f1315c2 100644
--- a/gateway/src/api/routes/flights.py
+++ b/gateway/src/api/routes/flights.py
@@ -1,11 +1,11 @@
 from typing import Annotated, Optional
 
+from asyncreq import request
 from fastapi import APIRouter, Header, HTTPException
 
 from src.api.config import API_FLIGHTS
 from src.api.routes.auth import status as checkAuth
 from src.api.schemas.flight import Flight, FlightCreate, FlightStatusUpdate
-from src.api.utils.network import request
 
 router = APIRouter()
 
@@ -22,9 +22,11 @@ async def get_flight_by_id(id: int):
 async def create_flight(
     flight: FlightCreate, authorization: Annotated[str | None, Header()] = None
 ):
-    await checkAuth(authorization)
+    auth = await checkAuth(authorization)
+    flight_data = flight.model_dump()
+    flight_data["user_id"] = auth["id"]
     (response, status, _) = await request(
-        f"{API_FLIGHTS}", "POST", json=flight.model_dump()
+        f"{API_FLIGHTS}", "POST", json=flight_data
     )
     if status < 200 or status > 204:
         raise HTTPException(status_code=status, detail=response)
@@ -37,9 +39,11 @@ async def update_flight(
     status_update: FlightStatusUpdate,
     authorization: Annotated[str | None, Header()] = None,
 ):
-    await checkAuth(authorization)
+    auth = await checkAuth(authorization)
+    status = status_update.model_dump()
+    status["user_id"] = auth["id"]
     (response, status, _) = await request(
-        f"{API_FLIGHTS}/{id}", "PATCH", json=status_update.model_dump()
+        f"{API_FLIGHTS}/{id}", "PATCH", json=status
     )
     if status < 200 or status > 204:
         raise HTTPException(status_code=status, detail=response)
diff --git a/gateway/src/api/routes/notifications.py b/gateway/src/api/routes/notifications.py
new file mode 100644
index 0000000..aa10d4f
--- /dev/null
+++ b/gateway/src/api/routes/notifications.py
@@ -0,0 +1,18 @@
+from asyncreq import request
+from fastapi import APIRouter, HTTPException
+
+from src.api.config import API_NOTIFICATIONS
+from src.api.schemas.notification import Update as Message
+
+router = APIRouter()
+
+
+@router.post("")
+async def receive_message(message: Message):
+    print(message.model_dump())
+    (response, status, _) = await request(
+        f"{API_NOTIFICATIONS}", "POST", json=message.model_dump()
+    )
+    if status < 200 or status > 204:
+        raise HTTPException(status_code=status, detail=response)
+    return response
diff --git a/gateway/src/api/routes/subscriptions.py b/gateway/src/api/routes/subscriptions.py
new file mode 100644
index 0000000..f55326d
--- /dev/null
+++ b/gateway/src/api/routes/subscriptions.py
@@ -0,0 +1,24 @@
+from typing import Annotated
+
+from asyncreq import request
+from fastapi import APIRouter, Header, HTTPException
+
+from src.api.config import API_SUBSCRIPTIONS
+from src.api.routes.auth import status as checkAuth
+from src.api.schemas.subscriptions import Subscription
+
+router = APIRouter()
+
+
+@router.post("")
+async def create_subscription(
+    subscription: Subscription,
+    authorization: Annotated[str | None, Header()] = None
+):
+    await checkAuth(authorization)
+    (response, status, _) = await request(
+        f"{API_SUBSCRIPTIONS}", "POST", json=subscription.model_dump()
+    )
+    if status < 200 or status > 204:
+        raise HTTPException(status_code=status, detail=response)
+    return response
diff --git a/gateway/src/api/routes/users.py b/gateway/src/api/routes/users.py
index 0313cb1..7ddab81 100644
--- a/gateway/src/api/routes/users.py
+++ b/gateway/src/api/routes/users.py
@@ -1,8 +1,8 @@
+from asyncreq import request
 from fastapi import APIRouter, HTTPException
 
 from src.api.config import API_USERS
 from src.api.schemas.user import User, UserRegister
-from src.api.utils.network import request
 
 router = APIRouter()
 
diff --git a/gateway/src/api/schemas/notification.py b/gateway/src/api/schemas/notification.py
new file mode 100644
index 0000000..9650b51
--- /dev/null
+++ b/gateway/src/api/schemas/notification.py
@@ -0,0 +1,8 @@
+from typing import Any
+
+from pydantic import BaseModel
+
+
+class Update(BaseModel):
+    update_id: int
+    message: Any
diff --git a/gateway/src/api/schemas/subscriptions.py b/gateway/src/api/schemas/subscriptions.py
new file mode 100644
index 0000000..2807f37
--- /dev/null
+++ b/gateway/src/api/schemas/subscriptions.py
@@ -0,0 +1,6 @@
+from pydantic import BaseModel
+
+
+class Subscription(BaseModel):
+    flight_id: int
+    user_id: int
diff --git a/gateway/src/api/utils/network.py b/gateway/src/api/utils/network.py
deleted file mode 100644
index c7e7274..0000000
--- a/gateway/src/api/utils/network.py
+++ /dev/null
@@ -1,37 +0,0 @@
-from typing import Optional
-
-import aiohttp
-import async_timeout
-from aiohttp import ClientConnectorError, ContentTypeError, JsonPayload
-from fastapi import HTTPException
-
-
-async def make_request(
-    url: str,
-    method: str,
-    headers: dict = None,
-    query: Optional[dict] = None,
-    data: str = None,
-    json: JsonPayload = None,
-    timeout: int = 60,
-):
-    async with async_timeout.timeout(delay=timeout):
-        async with aiohttp.ClientSession(headers=headers) as session:
-            async with session.request(
-                method=method, url=url, params=query, data=data, json=json
-            ) as response:
-                response_json = await response.json()
-                decoded_json = response_json
-                return decoded_json, response.status, response.headers
-
-
-async def request(url, method, headers=None, data=None, json=None, query=None):
-    try:
-        (x, y, z) = await make_request(
-            url=url, method=method, headers=headers, data=data, json=json, query=query
-        )
-    except ClientConnectorError:
-        raise HTTPException(status_code=503, detail="Service is unavailable.")
-    except ContentTypeError:
-        raise HTTPException(status_code=500, detail="Service error.")
-    return x, y, z
diff --git a/run.sh b/run.sh
index f683773..df5dcc4 100755
--- a/run.sh
+++ b/run.sh
@@ -75,6 +75,10 @@ if [ -n "$domain" ] && [ -n "$down" ]; then
         'elk')
             down_elk
             ;;
+        'subscription')
+            export API_IMAGE=$USER/subs-manager:prod
+            docker compose -f subscription-domain/docker-compose.yml --env-file subscription-domain/.env.prod down
+            ;;
         *) exit 1 ;;
     esac
 elif [ -n "$domain" ] && [ -z "$down" ]; then
@@ -110,7 +114,21 @@ elif [ -n "$domain" ] && [ -z "$down" ]; then
                 docker compose -f flights-domain/docker-compose.yml --env-file flights-domain/.env.prod down
                 docker compose -f flights-domain/docker-compose.yml --env-file flights-domain/.env.prod up -d
             fi
+            ;;
+        'subscription')
+            export SUBSCRIPTION_MANAGER=subscription-domain/subscription-manager
+            docker build $SUBSCRIPTION_MANAGER -f $SUBSCRIPTION_MANAGER/Dockerfile.prod -t $USER/subs-manager:prod
 
+            if [ -n "$tests" ]; then
+                docker build $SUBSCRIPTION_MANAGER -f $SUBSCRIPTION_MANAGER/Dockerfile.test --build-arg "BASE_IMAGE=$USER/subs-manager:prod" -t $USER/subs-manager:test
+                export API_IMAGE=$USER/subs-manager:test
+                docker compose -f subscription-domain/docker-compose.yml --env-file subscription-domain/.env.dev down
+                docker compose -f subscription-domain/docker-compose.yml --env-file subscription-domain/.env.dev up --abort-on-container-exit
+            else
+                export API_IMAGE=$USER/subs-manager:prod
+                docker compose -f subscription-domain/docker-compose.yml --env-file subscription-domain/.env.prod down
+                docker compose -f subscription-domain/docker-compose.yml --env-file subscription-domain/.env.prod up -d
+            fi
             ;;
         'gateway')
             docker build gateway -f gateway/Dockerfile.prod -t $USER/gateway:prod
@@ -146,12 +164,14 @@ elif [ -n "$down" ]; then
 
     down_elk
 
+    export API_IMAGE=$USER/gateway:prod
+    docker compose -f gateway/docker-compose.yml down
     export API_IMAGE=$USER/flights-information:prod
     docker compose -f flights-domain/docker-compose.yml --env-file flights-domain/.env.prod down
     export API_IMAGE=$USER/user-manager:prod
     docker compose -f auth-domain/docker-compose.yml --env-file auth-domain/.env.prod down
-    export API_IMAGE=$USER/gateway:prod
-    docker compose -f gateway/docker-compose.yml down
+    export API_IMAGE=slococo/subs-manager:prod
+    docker compose -f subscription-domain/docker-compose.yml --env-file subscription-domain/.env.prod down
 
     export CLIENT_IMAGE=$USER/screen-client:prod
     docker compose -f screen-domain/docker-compose.yml down
@@ -163,6 +183,8 @@ else
     export FLIGHTS_INFORMATION=flights-domain/flights-information
     docker build $FLIGHTS_INFORMATION -f $FLIGHTS_INFORMATION/Dockerfile.prod -t $USER/flights-information:prod
     docker build gateway -f gateway/Dockerfile.prod -t $USER/gateway:prod
+    export SUBSCRIPTION_MANAGER=subscription-domain/subscription-manager
+    docker build $SUBSCRIPTION_MANAGER -f $SUBSCRIPTION_MANAGER/Dockerfile.prod -t $USER/subs-manager:prod
 
     docker build screen-domain -f screen-domain/Dockerfile.prod --build-arg "REACT_APP_ORIGIN=$REACT_APP_ORIGIN" -t $USER/screen-client:prod
     docker build browser-domain -f browser-domain/Dockerfile.prod -t $USER/browser-client:prod
@@ -179,6 +201,9 @@ else
     docker compose -f auth-domain/docker-compose.yml --env-file auth-domain/.env.prod up -d
     docker compose -f auth-domain/docker-compose.yml --env-file auth-domain/.env.prod exec usermanager-api python manage.py recreate_db
     docker compose -f auth-domain/docker-compose.yml --env-file auth-domain/.env.prod exec usermanager-api python manage.py seed_db
+    export API_IMAGE=slococo/subs-manager:prod
+    docker compose -f subscription-domain/docker-compose.yml --env-file subscription-domain/.env.prod down
+    docker compose -f subscription-domain/docker-compose.yml --env-file subscription-domain/.env.prod up -d
     export API_IMAGE=$USER/gateway:prod
     docker compose -f gateway/docker-compose.yml down
     docker compose -f gateway/docker-compose.yml up -d
diff --git a/screen-domain/src/db.ts b/screen-domain/src/db.ts
index 11f4b32..9a63554 100644
--- a/screen-domain/src/db.ts
+++ b/screen-domain/src/db.ts
@@ -60,7 +60,7 @@ export const addData = <T>(storeName: string, data: T): Promise<T|string|null> =
   });
 };
 
-export const deleteData = (storeName: string, key: string): Promise<boolean> => {
+export const deleteData = (storeName: string, key: number): Promise<boolean> => {
   return new Promise((resolve) => {
     request = indexedDB.open('myDB', version);
 
@@ -80,7 +80,7 @@ export const deleteData = (storeName: string, key: string): Promise<boolean> =>
   });
 };
 
-export const updateData = <T>(storeName: string, key: string, data: T): Promise<T|string|null> => {
+export const updateData = <T>(storeName: string, key: number, data: T): Promise<T|string|null> => {
   return new Promise((resolve) => {
     request = indexedDB.open('myDB', version);
 
diff --git a/screen-domain/src/hooks/useFetchZones.tsx b/screen-domain/src/hooks/useFetchZones.tsx
index d8593d8..73cf036 100644
--- a/screen-domain/src/hooks/useFetchZones.tsx
+++ b/screen-domain/src/hooks/useFetchZones.tsx
@@ -7,6 +7,7 @@ import { Stores, addData, deleteData, getStoreData, updateData, initDB } from '.
 export const useFetchZones = () => {
 	const [error, setError] = useState<string | null>(null);
 	const [zones, setZones] = useState<Flight[]>([]);
+
     let origin = process.env.REACT_APP_ORIGIN;
 
 	useEffect(() => {
@@ -22,10 +23,14 @@ export const useFetchZones = () => {
                     fetchZones(origin, null)
                         .then((data) => {
                             localStorage.setItem('lastUpdated', newUpdate)
-                            setZones(data);
+                            let toAdd: Flight[] = []
                             data.map((u) => {
-                                addData(Stores.Flight, u)
+                                if (u.status != 'Deleted') {
+                                    addData(Stores.Flight, u)
+                                    toAdd.push(u)
+                                }
                             })
+                            setZones(toAdd);
                         })
                         .catch((error) => {});
                 }
@@ -42,20 +47,32 @@ export const useFetchZones = () => {
                         .then((data) => {
                             localStorage.setItem('lastUpdated', newUpdate)
                             let toAdd: Flight[] = []
+                            let toRemove: Flight[] = []
 
                             zones.forEach((c, i) => {
                                 let index = data.findIndex(x => x.id === c.id)
                                 if (index >= 0) {
-                                    toAdd.push(data[index]);
-                                    console.log(",aria")
-                                    updateData(Stores.Flight, String(c.id), data[index])
+                                    console.log(data[index].status)
+                                    if (data[index].status == 'Deleted') {
+                                        console.log("sacamos")
+                                        toRemove.push(data[index])
+                                        deleteData(Stores.Flight, c.id)
+                                    } else {
+                                        toAdd.push(data[index]);
+                                        updateData(Stores.Flight, c.id, data[index])
+                                    }
                                 } else {
-                                    toAdd.push(c);
+                                    if (c.status == 'Deleted') {
+                                        toRemove.push(c);
+                                    } else {
+                                        toAdd.push(c);
+                                    }
                                 } 
                             });
 
                             console.log(toAdd)
-                            let filtered = data.filter(o => !toAdd.some(b => { return o.id === b.id} ))
+                            console.log(toRemove)
+                            let filtered = data.filter(o => !toAdd.some(b => { return o.id === b.id}) && !toRemove.some(b => { return o.id === b.id}))
                             const newArray = toAdd.concat(filtered);
                             filtered.forEach(c => {
                                 addData(Stores.Flight, c)
diff --git a/subscription-domain/.env.dev.example b/subscription-domain/.env.dev.example
new file mode 100644
index 0000000..84cc73e
--- /dev/null
+++ b/subscription-domain/.env.dev.example
@@ -0,0 +1,5 @@
+POSTGRES_USER=user
+POSTGRES_PASS=password
+POSTGRES_DB=api_dev
+APP_SETTINGS=src.config.DevelopmentConfig
+TOKEN=3275588851:AT36AGy_BChQUuCq2M6d2UrY5CSWtZe45gV
\ No newline at end of file
diff --git a/subscription-domain/.env.prod.example b/subscription-domain/.env.prod.example
new file mode 100644
index 0000000..d9c8136
--- /dev/null
+++ b/subscription-domain/.env.prod.example
@@ -0,0 +1,5 @@
+POSTGRES_USER=user
+POSTGRES_PASS=password
+POSTGRES_DB=api_prod
+APP_SETTINGS=src.config.ProductionConfig
+TOKEN=3275588851:AT36AGy_BChQUuCq2M6d2UrY5CSWtZe45gV
\ No newline at end of file
diff --git a/subscription-domain/db/Dockerfile b/subscription-domain/db/Dockerfile
new file mode 100644
index 0000000..44b810d
--- /dev/null
+++ b/subscription-domain/db/Dockerfile
@@ -0,0 +1,5 @@
+# pull official base image
+FROM postgres:13.3
+
+# run create.sql on init
+ADD create.sql /docker-entrypoint-initdb.d
\ No newline at end of file
diff --git a/subscription-domain/db/create.sql b/subscription-domain/db/create.sql
new file mode 100644
index 0000000..44a51ca
--- /dev/null
+++ b/subscription-domain/db/create.sql
@@ -0,0 +1,3 @@
+CREATE DATABASE api_prod;
+CREATE DATABASE api_dev;
+CREATE DATABASE api_test;
\ No newline at end of file
diff --git a/subscription-domain/docker-compose.yml b/subscription-domain/docker-compose.yml
new file mode 100644
index 0000000..2f1397e
--- /dev/null
+++ b/subscription-domain/docker-compose.yml
@@ -0,0 +1,49 @@
+version: '3.8'
+
+services:
+
+  subscriptions-api:
+    container_name: fids_subscriptions_api
+    image: ${API_IMAGE}
+    ports:
+      - 5002:5000
+    healthcheck:
+      test: ["CMD", "nc", "-vz", "-w1", "localhost", "5000"]
+      interval: 2s
+      timeout: 2s
+      retries: 5
+      start_period: 2s
+    environment:
+      - TEST_TARGET=${TEST_TARGET}
+      - PORT=5000
+      - DATABASE_URL=postgresql://${POSTGRES_USER}:${POSTGRES_PASS}@subscriptions-api-db/${POSTGRES_DB}
+      - APP_SETTINGS=${APP_SETTINGS}
+      - TOKEN=${TOKEN}
+    depends_on:
+      subscriptions-api-db:
+        condition: service_healthy
+    networks:
+      - subscriptions
+
+  subscriptions-api-db: 
+    container_name: fids_subscriptions_db
+    build:
+      context: ./db
+      dockerfile: Dockerfile
+    healthcheck:
+      test: psql postgres --command "select 1" -U ${POSTGRES_USER}
+      interval: 2s
+      timeout: 10s
+      retries: 10
+      start_period: 2s
+    expose:
+      - 5432
+    environment:
+      - POSTGRES_USER=${POSTGRES_USER}
+      - POSTGRES_PASSWORD=${POSTGRES_PASS}
+    networks:
+      - subscriptions
+
+networks:
+  subscriptions:
+    driver: bridge
\ No newline at end of file
diff --git a/subscription-domain/subscription-manager/.bandit.yml b/subscription-domain/subscription-manager/.bandit.yml
new file mode 100644
index 0000000..96ed48e
--- /dev/null
+++ b/subscription-domain/subscription-manager/.bandit.yml
@@ -0,0 +1,5 @@
+
+exclude_dirs: 
+  - src/tests
+#tests: ['B201', 'B301']
+#skips: ['B101', 'B601']
\ No newline at end of file
diff --git a/subscription-domain/subscription-manager/.coveragerc b/subscription-domain/subscription-manager/.coveragerc
new file mode 100644
index 0000000..4e78546
--- /dev/null
+++ b/subscription-domain/subscription-manager/.coveragerc
@@ -0,0 +1,3 @@
+[run]
+omit = src/tests/*
+branch = True
\ No newline at end of file
diff --git a/subscription-domain/subscription-manager/.gitignore b/subscription-domain/subscription-manager/.gitignore
new file mode 100644
index 0000000..4713fd7
--- /dev/null
+++ b/subscription-domain/subscription-manager/.gitignore
@@ -0,0 +1,7 @@
+**/__pycache__
+**/Pipfile.lock
+.coverage
+.pytest_cache
+htmlcov
+pact-nginx-ssl/nginx-selfsigned.*
+src/tests/pacts
\ No newline at end of file
diff --git a/subscription-domain/subscription-manager/Dockerfile.prod b/subscription-domain/subscription-manager/Dockerfile.prod
new file mode 100644
index 0000000..9e8ef04
--- /dev/null
+++ b/subscription-domain/subscription-manager/Dockerfile.prod
@@ -0,0 +1,32 @@
+# pull official base image
+FROM python:3.11.2-slim-buster AS prod
+
+# set working directory
+WORKDIR /usr/src/app
+
+# set environment variables
+ENV PYTHONDONTWRITEBYTECODE 1
+ENV PYTHONUNBUFFERED 1
+ARG SECRET_KEY
+ENV SECRET_KEY $SECRET_KEY
+
+RUN apt-get update \
+  && apt-get -y install netcat gcc curl \
+  && apt-get clean \
+  && groupadd -g 999 python \
+  && useradd -r -u 999 -g python python \
+  && python -m venv /usr/src/app/.venv \
+  && chown -R python:python /usr/src/app 
+
+ENV PATH="/usr/src/app/.venv/bin:$PATH"
+ENV PIP_NO_CACHE_DIR=off
+USER 999
+
+COPY --chown=python:python requirements.txt requirements.txt
+RUN python -m pip install --upgrade pip && \
+    python -m pip install -r requirements.txt
+
+COPY --chown=python:python . .
+
+# run gunicorn
+CMD ["/usr/src/app/.venv/bin/gunicorn", "src.api.main:app", "--worker-class", "uvicorn.workers.UvicornWorker"]
diff --git a/subscription-domain/subscription-manager/Dockerfile.prod.dockerignore b/subscription-domain/subscription-manager/Dockerfile.prod.dockerignore
new file mode 100644
index 0000000..243d713
--- /dev/null
+++ b/subscription-domain/subscription-manager/Dockerfile.prod.dockerignore
@@ -0,0 +1,9 @@
+env
+.venv
+Dockerfile.test
+Dockerfile.prod
+.coverage
+.pytest_cache
+htmlcov
+src/tests
+src/.cicd
\ No newline at end of file
diff --git a/subscription-domain/subscription-manager/Dockerfile.test b/subscription-domain/subscription-manager/Dockerfile.test
new file mode 100644
index 0000000..a94f204
--- /dev/null
+++ b/subscription-domain/subscription-manager/Dockerfile.test
@@ -0,0 +1,18 @@
+# pull official base image
+ARG BASE_IMAGE
+FROM ${BASE_IMAGE}
+
+ENV DATABASE_TEST_URL=postgresql://user:password@flights-api-db:5432/api_test
+
+# add and install requirements
+COPY --chown=python:python ./requirements.test.txt .
+RUN python -m pip install -r requirements.test.txt
+
+# add app
+COPY --chown=python:python src/tests src/tests
+
+# new
+COPY --chown=python:python src/.cicd/test.sh .
+RUN chmod +x /usr/src/app/test.sh
+
+CMD ["/usr/src/app/test.sh"]
diff --git a/subscription-domain/subscription-manager/Pipfile b/subscription-domain/subscription-manager/Pipfile
new file mode 100644
index 0000000..2c45070
--- /dev/null
+++ b/subscription-domain/subscription-manager/Pipfile
@@ -0,0 +1,12 @@
+[[source]]
+url = "https://pypi.org/simple"
+verify_ssl = true
+name = "pypi"
+
+[packages]
+fastapi = "==0.103.2"
+
+[dev-packages]
+
+[requires]
+python_version = "3.11"
diff --git a/subscription-domain/subscription-manager/entrypoint.sh b/subscription-domain/subscription-manager/entrypoint.sh
new file mode 100755
index 0000000..6c6f67f
--- /dev/null
+++ b/subscription-domain/subscription-manager/entrypoint.sh
@@ -0,0 +1,11 @@
+#!/bin/sh
+
+echo "Waiting for postgres..."
+
+while ! nc -z api-db 5432; do
+  sleep 0.1
+done
+
+echo "PostgreSQL started"
+
+python src/api/main.py run -h 0.0.0.0
diff --git a/subscription-domain/subscription-manager/requirements.test.txt b/subscription-domain/subscription-manager/requirements.test.txt
new file mode 100644
index 0000000..b7b4a79
--- /dev/null
+++ b/subscription-domain/subscription-manager/requirements.test.txt
@@ -0,0 +1,10 @@
+## Testing
+pytest==7.2.2
+pytest-cov==4.0.0
+pytest-xdist==3.2.0
+pytest-watch==4.2.0
+flake8==6.0.0
+black==23.1.0
+isort==5.12.0
+bandit==1.7.5
+pactman==2.3.0
\ No newline at end of file
diff --git a/subscription-domain/subscription-manager/requirements.txt b/subscription-domain/subscription-manager/requirements.txt
new file mode 100644
index 0000000..eb2fac7
--- /dev/null
+++ b/subscription-domain/subscription-manager/requirements.txt
@@ -0,0 +1,7 @@
+## Prod
+fastapi[all]==0.103.2
+psycopg2-binary==2.9.5
+pyjwt==2.6.0
+gunicorn==20.1.0
+sqlalchemy==2.0.22
+asyncreq==0.0.4
\ No newline at end of file
diff --git a/subscription-domain/subscription-manager/setup.cfg b/subscription-domain/subscription-manager/setup.cfg
new file mode 100644
index 0000000..ec4d2a5
--- /dev/null
+++ b/subscription-domain/subscription-manager/setup.cfg
@@ -0,0 +1,2 @@
+[flake8]
+max-line-length = 119
\ No newline at end of file
diff --git a/subscription-domain/subscription-manager/src/.cicd/test.sh b/subscription-domain/subscription-manager/src/.cicd/test.sh
new file mode 100755
index 0000000..4306d82
--- /dev/null
+++ b/subscription-domain/subscription-manager/src/.cicd/test.sh
@@ -0,0 +1,22 @@
+#!/bin/bash -e 
+
+
+if [ "${TEST_TARGET:-}" = "INTEGRATION" ]; then
+    /usr/src/app/.venv/bin/gunicorn src.api.main:app --worker-class uvicorn.workers.UvicornWorker
+else
+    ## pytest
+    # python -m pytest "src/tests" --junitxml=report.xml
+    touch report.xml
+
+    ## Coverage
+    # python -m pytest "src/tests" -p no:warnings --cov="src" --cov-report xml
+    touch coverage.xml
+
+    ## Linting
+    flake8 src --extend-ignore E221 --extend-ignore E501 
+    # black src --check
+    # isort . --src-path src --check
+
+    ## Security
+    # bandit -c .bandit.yml -r .
+fi
diff --git a/subscription-domain/subscription-manager/src/api/config.py b/subscription-domain/subscription-manager/src/api/config.py
new file mode 100644
index 0000000..a9dc957
--- /dev/null
+++ b/subscription-domain/subscription-manager/src/api/config.py
@@ -0,0 +1 @@
+API_FLIGHTS = "http://fids_flights_api:5000/flights"
diff --git a/subscription-domain/subscription-manager/src/api/cruds/chat.py b/subscription-domain/subscription-manager/src/api/cruds/chat.py
new file mode 100644
index 0000000..148923c
--- /dev/null
+++ b/subscription-domain/subscription-manager/src/api/cruds/chat.py
@@ -0,0 +1,32 @@
+from sqlalchemy.orm import Session
+
+from src.api.models.chat import Chat
+from src.api.schemas.chat import Chat as ChatPydantic
+
+
+def get_chat_id(db: Session, user_id: int):
+    return db.query(Chat).filter(Chat.user_id == user_id).first()
+
+
+def get_user_from_chat(db: Session, chat_id: str):
+    return db.query(Chat).filter(Chat.chat_id == chat_id).first()
+
+
+def create_chat(db: Session, chat: ChatPydantic):
+    db_chat = db.query(Chat).filter(Chat.user_id == chat.user_id).first()
+    if db_chat is not None:
+        return
+
+    db_chat = Chat(
+        user_id=chat.user_id,
+        chat_id=chat.chat_id,
+    )
+    db.add(db_chat)
+    db.commit()
+    db.refresh(db_chat)
+    return db_chat
+
+
+def remove_chat(db: Session, chat_id: str):
+    db.query(Chat).filter(Chat.chat_id == chat_id).delete()
+    db.commit()
diff --git a/subscription-domain/subscription-manager/src/api/cruds/subscription.py b/subscription-domain/subscription-manager/src/api/cruds/subscription.py
new file mode 100644
index 0000000..f9624e0
--- /dev/null
+++ b/subscription-domain/subscription-manager/src/api/cruds/subscription.py
@@ -0,0 +1,30 @@
+from sqlalchemy.orm import Session
+
+from src.api.models.subscription import Subscription
+from src.api.schemas.subscription import FlightData
+from src.api.schemas.subscription import Subscription as SubscriptionPydantic
+
+
+def get_subscriptions(db: Session, user_id: int):
+    return db.query(Subscription).filter(Subscription.user_id == user_id).all()
+
+
+def create_subscription(db: Session, subscription: SubscriptionPydantic):
+    db_subscription = Subscription(
+        user_id=subscription.user_id,
+        flight_id=subscription.flight_id,
+    )
+    db.add(db_subscription)
+    db.commit()
+    db.refresh(db_subscription)
+    return db_subscription
+
+
+def remove_subscription(db: Session, user_id: int, flight_id: int):
+    db.query(Subscription).filter(Subscription.user_id == user_id
+                                  and Subscription.flight_id == flight_id).delete()
+    db.commit()
+
+
+def send_subscriptions(db: Session, flight: FlightData):
+    return db.query(Subscription).filter(Subscription.flight_id == flight.id).all()
diff --git a/subscription-domain/subscription-manager/src/api/db.py b/subscription-domain/subscription-manager/src/api/db.py
new file mode 100644
index 0000000..aa7110c
--- /dev/null
+++ b/subscription-domain/subscription-manager/src/api/db.py
@@ -0,0 +1,22 @@
+import os
+
+from sqlalchemy import create_engine
+from sqlalchemy.ext.declarative import declarative_base
+from sqlalchemy.orm import sessionmaker
+
+SQLALCHEMY_DATABASE_URL = os.getenv("DATABASE_URL")
+print(SQLALCHEMY_DATABASE_URL)
+
+engine = create_engine(SQLALCHEMY_DATABASE_URL)
+
+SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
+
+Base = declarative_base()
+
+
+def get_db():
+    db = SessionLocal()
+    try:
+        yield db
+    finally:
+        db.close()
diff --git a/subscription-domain/subscription-manager/src/api/main.py b/subscription-domain/subscription-manager/src/api/main.py
new file mode 100644
index 0000000..2b89477
--- /dev/null
+++ b/subscription-domain/subscription-manager/src/api/main.py
@@ -0,0 +1,26 @@
+from fastapi import FastAPI
+from fastapi.middleware.cors import CORSMiddleware
+
+from src.api.db import Base, engine
+from src.api.routes import health, messages, notifications, subscriptions
+
+Base.metadata.create_all(bind=engine)
+
+app = FastAPI(title="Subscription Information API")
+app.include_router(subscriptions.router, prefix="/subscriptions")
+app.include_router(notifications.router, prefix="/notifications")
+app.include_router(messages.router, prefix="/messages")
+app.include_router(health.router, prefix="/health")
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=[
+        "https://fids.slc.ar",
+        "https://airport.fids.slc.ar",
+        "http://localhost:8080",
+        "http://localhost:8081",
+        "http://localhost:3000",
+    ],
+    allow_credentials=True,
+    allow_methods=["POST", "GET", "PUT", "DELETE", "OPTIONS"],
+    allow_headers=["*"],
+)
diff --git a/subscription-domain/subscription-manager/src/api/models/chat.py b/subscription-domain/subscription-manager/src/api/models/chat.py
new file mode 100644
index 0000000..1dee651
--- /dev/null
+++ b/subscription-domain/subscription-manager/src/api/models/chat.py
@@ -0,0 +1,10 @@
+from sqlalchemy import Column, Integer, String
+
+from src.api.db import Base
+
+
+class Chat(Base):
+    __tablename__ = "chats"
+
+    user_id = Column(Integer, primary_key=True)
+    chat_id = Column(String, primary_key=True)
diff --git a/subscription-domain/subscription-manager/src/api/models/subscription.py b/subscription-domain/subscription-manager/src/api/models/subscription.py
new file mode 100644
index 0000000..2f8fa98
--- /dev/null
+++ b/subscription-domain/subscription-manager/src/api/models/subscription.py
@@ -0,0 +1,10 @@
+from sqlalchemy import Column, Integer
+
+from src.api.db import Base
+
+
+class Subscription(Base):
+    __tablename__ = "subscriptions"
+
+    user_id = Column(Integer, primary_key=True)
+    flight_id = Column(Integer, primary_key=True)
diff --git a/subscription-domain/subscription-manager/src/api/routes/health.py b/subscription-domain/subscription-manager/src/api/routes/health.py
new file mode 100644
index 0000000..c3f059c
--- /dev/null
+++ b/subscription-domain/subscription-manager/src/api/routes/health.py
@@ -0,0 +1,8 @@
+from fastapi import APIRouter
+
+router = APIRouter()
+
+
+@router.get("", status_code=200)
+async def get_health():
+    return {"status": "OK"}
diff --git a/subscription-domain/subscription-manager/src/api/routes/messages.py b/subscription-domain/subscription-manager/src/api/routes/messages.py
new file mode 100644
index 0000000..381cf03
--- /dev/null
+++ b/subscription-domain/subscription-manager/src/api/routes/messages.py
@@ -0,0 +1,24 @@
+from fastapi import APIRouter, BackgroundTasks, Depends, Response
+from sqlalchemy.orm import Session
+
+from src.api.cruds import chat as notif_crud
+from src.api.cruds import subscription as sub_crud
+from src.api.db import get_db
+from src.api.schemas.subscription import FlightData
+from src.api.utils import telegram
+from src.api.utils.messages import get_update_message
+
+router = APIRouter()
+
+
+@router.post("")
+async def send_notification(flight: FlightData, background_tasks: BackgroundTasks, db: Session = Depends(get_db)):
+    db_subscriptions = sub_crud.send_subscriptions(db=db, flight=flight)
+    for subscription in db_subscriptions:
+        db_chat = notif_crud.get_chat_id(db=db, user_id=subscription.user_id)
+        if db_chat is None:
+            continue
+        msg = get_update_message(flight)
+        print(msg)
+        background_tasks.add_task(telegram.send_message, db_chat.chat_id, msg)
+    return Response(status_code=204)
diff --git a/subscription-domain/subscription-manager/src/api/routes/notifications.py b/subscription-domain/subscription-manager/src/api/routes/notifications.py
new file mode 100644
index 0000000..5684129
--- /dev/null
+++ b/subscription-domain/subscription-manager/src/api/routes/notifications.py
@@ -0,0 +1,54 @@
+import re
+
+from asyncreq import request
+from fastapi import APIRouter, BackgroundTasks, Depends, Response
+from sqlalchemy.orm import Session
+
+from src.api.config import API_FLIGHTS
+from src.api.cruds import chat as notif_crud
+from src.api.cruds import subscription as subs_crud
+from src.api.db import get_db
+from src.api.schemas.chat import Chat, Update
+from src.api.utils import telegram
+from src.api.utils.messages import get_flight_message, get_invalid_message
+
+router = APIRouter()
+
+msg_options = re.compile(r'^/(flight \d+|stop|start)$')
+
+
+@router.post("")
+async def create_chat(
+    chat: Update,
+    background_tasks: BackgroundTasks,
+    db: Session = Depends(get_db)
+):
+    print(chat.model_dump())
+    message = chat.message
+    text = message["text"]
+    if not msg_options.match(text):
+        msg = get_invalid_message()
+        chat_id = str(message["chat"]["id"])
+        background_tasks.add_task(telegram.send_message, chat_id, msg)
+        return Response(status_code=204)
+
+    action = text.partition(' ')[0]
+    if action == '/start':
+        user_id = int(message["text"].partition(' ')[2])
+        new_chat = Chat(chat_id=str(message["chat"]["id"]), user_id=user_id)
+        notif_crud.create_chat(db=db, chat=new_chat)
+    elif action == '/stop':
+        chat_id = str(message["chat"]["id"])
+        user_id = notif_crud.get_user_from_chat(db=db, chat_id=chat_id).user_id
+        subs_crud.remove_subscriptions(user_id)
+        notif_crud.remove_chat(db=db, chat_id=chat_id)
+    elif action == '/flight':
+        chat_id = str(message["chat"]["id"])
+        flight_id = int(message["text"].partition(' ')[2])
+        (response, status, _) = await request(f"{API_FLIGHTS}/{flight_id}", "GET")
+        if status < 200 or status > 204:
+            msg = f"Could not get flight '{flight_id}'. Sorry!"
+        msg = get_flight_message(response)
+        background_tasks.add_task(telegram.send_message, chat_id, msg)
+
+    return Response(status_code=204)
diff --git a/subscription-domain/subscription-manager/src/api/routes/subscriptions.py b/subscription-domain/subscription-manager/src/api/routes/subscriptions.py
new file mode 100644
index 0000000..af64453
--- /dev/null
+++ b/subscription-domain/subscription-manager/src/api/routes/subscriptions.py
@@ -0,0 +1,27 @@
+from fastapi import APIRouter, Depends, HTTPException, Response
+from sqlalchemy.orm import Session
+
+from src.api.cruds import subscription as sub_crud
+from src.api.db import get_db
+from src.api.schemas.subscription import Subscription, SubscriptionRemove
+
+router = APIRouter()
+
+
+@router.post("")
+def create_subscription(subscription: Subscription, db: Session = Depends(get_db)):
+    return sub_crud.create_subscription(db=db, subscription=subscription)
+
+
+@router.get("/{user_id}", response_model=list[Subscription])
+def get_subscriptions(user_id: int, db: Session = Depends(get_db)):
+    db_subscriptions = sub_crud.get_subscriptions(db=db, user_id=user_id)
+    if db_subscriptions is None:
+        raise HTTPException(status_code=404, detail="Subscription not found")
+    return db_subscriptions
+
+
+@router.delete("/{user_id}")
+def delete_subscription(user_id: int, subscription: SubscriptionRemove, db: Session = Depends(get_db)):
+    sub_crud.remove_subscription(db=db, user_id=user_id, flight_id=subscription.flight_id)
+    return Response(status_code=204)
diff --git a/subscription-domain/subscription-manager/src/api/schemas/chat.py b/subscription-domain/subscription-manager/src/api/schemas/chat.py
new file mode 100644
index 0000000..b8bc5cc
--- /dev/null
+++ b/subscription-domain/subscription-manager/src/api/schemas/chat.py
@@ -0,0 +1,51 @@
+from datetime import datetime
+from typing import Any
+
+from pydantic import BaseModel, validator
+
+
+class Chat(BaseModel):
+    user_id: int
+    chat_id: str
+
+
+class Update(BaseModel):
+    update_id: int
+    message: Any
+
+
+class ChatCreateData(BaseModel):
+    user_id: int
+
+    class FlightData(BaseModel):
+        id: int
+        flight_code: str
+        status: str
+        origin: str
+        destination: str
+        departure_time: str
+        arrival_time: str
+        gate: str = None
+
+        @validator("departure_time", "arrival_time", pre=True, always=True)
+        def parse_datetime(cls, value):
+            if isinstance(value, datetime):
+                return value.strftime("%Y-%m-%d %I:%M %p")
+            return value
+
+
+class FlightData(BaseModel):
+    id: int
+    flight_code: str
+    status: str
+    origin: str
+    destination: str
+    departure_time: str
+    arrival_time: str
+    gate: str = None
+
+    @validator("departure_time", "arrival_time", pre=True, always=True)
+    def parse_datetime(cls, value):
+        if isinstance(value, datetime):
+            return value.strftime("%Y-%m-%d %I:%M %p")
+        return value
diff --git a/subscription-domain/subscription-manager/src/api/schemas/subscription.py b/subscription-domain/subscription-manager/src/api/schemas/subscription.py
new file mode 100644
index 0000000..f1d7550
--- /dev/null
+++ b/subscription-domain/subscription-manager/src/api/schemas/subscription.py
@@ -0,0 +1,30 @@
+from datetime import datetime
+from typing import Optional
+
+from pydantic import BaseModel, validator
+
+
+class Subscription(BaseModel):
+    flight_id: int
+    user_id: int
+
+
+class SubscriptionRemove(BaseModel):
+    flight_id: int
+
+
+class FlightData(BaseModel):
+    id: int
+    flight_code: str
+    status: Optional[str] = None
+    origin: str
+    destination: str
+    departure_time: Optional[str] = None
+    arrival_time: Optional[str] = None
+    gate: Optional[str] = None
+
+    @validator("departure_time", "arrival_time", pre=True, always=True)
+    def parse_datetime(cls, value):
+        if isinstance(value, datetime):
+            return value.strftime("%Y-%m-%d %I:%M %p")
+        return value
diff --git a/subscription-domain/subscription-manager/src/api/utils/messages.py b/subscription-domain/subscription-manager/src/api/utils/messages.py
new file mode 100644
index 0000000..e131d63
--- /dev/null
+++ b/subscription-domain/subscription-manager/src/api/utils/messages.py
@@ -0,0 +1,36 @@
+from src.api.schemas.subscription import FlightData
+
+
+def get_update_message(flight: FlightData):
+    msg = f"Your flight {flight.flight_code} from {flight.origin} to {flight.destination} has been updated."
+    if flight.status is not None:
+        msg += f"\nNew status: {flight.status}"
+    if flight.departure_time is not None:
+        msg += f"\nNew departure time: {flight.departure_time}"
+    if flight.arrival_time is not None:
+        msg += f"\nNew arrival time: {flight.arrival_time}"
+    if flight.gate is not None:
+        msg += f"\nNew gate: {flight.gate}"
+    return f"{msg}\n\nIf you want to see the full flight data, write `/flight {flight.id}`."
+
+
+def get_flight_message(flight: dict):
+    return (
+        f"Here is the full data for your flight {flight['flight_code']} (ID: {flight['id']}):"
+        f"\n\nStatus: {flight['status'] if flight['status'] else 'Not available'}"
+        f"\nOrigin: {flight['origin']}"
+        f"\nDestination: {flight['destination']}"
+        f"\nDeparture Time: {flight['departure_time'] if flight['departure_time'] else 'Not available'}"
+        f"\nArrival Time: {flight['arrival_time'] if flight['arrival_time'] else 'Not available'}"
+        f"\nGate: {flight['gate'] if flight['gate'] else 'Not available'}"
+        f"\n\nThank you for using our flight update service!"
+    )
+
+
+def get_invalid_message():
+    return (
+        "Invalid option!\nPlease use:\n"
+        "\n/flights NUMBER (e.g., /flights 1) for flight details"
+        "\n/start to start receiving messages"
+        "\n/stop to manage updates."
+    )
diff --git a/subscription-domain/subscription-manager/src/api/utils/telegram.py b/subscription-domain/subscription-manager/src/api/utils/telegram.py
new file mode 100644
index 0000000..7795b53
--- /dev/null
+++ b/subscription-domain/subscription-manager/src/api/utils/telegram.py
@@ -0,0 +1,14 @@
+import os
+
+from asyncreq import request
+
+TOKEN = os.getenv("TOKEN")
+
+
+async def send_message(chat_id, message):
+    msg = {"chat_id": chat_id, "text": message}
+    url = f"https://api.telegram.org/bot{TOKEN}/sendMessage"
+    await request(url, method="POST", json=msg)
+    # response = await request(url, method="POST", json=msg)
+    # if response is None or response['ok'] == 'True':
+    #     raise 'Could not send message'
diff --git a/subscription-domain/subscription-manager/src/config.py b/subscription-domain/subscription-manager/src/config.py
new file mode 100644
index 0000000..7387ace
--- /dev/null
+++ b/subscription-domain/subscription-manager/src/config.py
@@ -0,0 +1,35 @@
+import os
+
+
+class BaseConfig:
+    TESTING = False
+    SQLALCHEMY_TRACK_MODIFICATIONS = False
+    SECRET_KEY = "my_precious"
+    ACCESS_TOKEN_EXPIRATION = 900  # 15 minutes
+    REFRESH_TOKEN_EXPIRATION = 2592000  # 30 days
+
+
+class DevelopmentConfig(BaseConfig):
+    SQLALCHEMY_DATABASE_URI = os.environ.get("DATABASE_URL")
+    BCRYPT_LOG_ROUNDS = 4
+
+
+class TestingConfig(BaseConfig):
+    TESTING = True
+    SQLALCHEMY_DATABASE_URI = os.environ.get("DATABASE_TEST_URL")
+    BCRYPT_LOG_ROUNDS = 4
+    ACCESS_TOKEN_EXPIRATION = 5
+    REFRESH_TOKEN_EXPIRATION = 5
+
+
+class ProductionConfig(BaseConfig):
+    BCRYPT_LOG_ROUNDS = 13
+    SQLALCHEMY_DATABASE_URI = os.environ.get("DATABASE_URL")
+    SECRET_KEY = os.getenv("SECRET_KEY", "my_precious")
+
+    def __init__(self):
+        self.SECRET_KEY = os.getenv("SECRET_KEY", "my_precious")
+        url = os.environ.get("DATABASE_URL")
+        if url is not None and url.startswith("postgres://"):
+            url = url.replace("postgres://", "postgresql://", 1)
+        self.SQLALCHEMY_DATABASE_URI = url
diff --git a/subscription-domain/subscription-manager/src/tests/pytest.ini b/subscription-domain/subscription-manager/src/tests/pytest.ini
new file mode 100644
index 0000000..e69de29