How to push notification "Firebase Cloud Messaging" using CDP 365

I. Create a Firebase project

1. Create a project

- Log in Firebase and create a new project

- Enter the name of project and click "Continue"

- Accept the privacy and create project

2. Build "Cloud Messaging"

- Add firebase to your web app

- Click "Register app"

- Copy "firebaseConfig" and Click "Continue to console"

- Firebase config:

apiKey: "AIzaSyBUJrgxGjFUWld-q_zr_cVzrN9IaB4KfmE",
  authDomain: "fir-clound-messaging-ab666.firebaseapp.com",
  projectId: "fir-clound-messaging-ab666",
  storageBucket: "fir-clound-messaging-ab666.appspot.com",
  messagingSenderId: "974234323980",
  appId: "1:974234323980:web:03d23bee74ed48eb5c7229",
  measurementId: "G-EE955NEBKJ"

- Click settings icon and select "Project settings"

- Click "Cloud Messaging"

- Enable Cloud Messaging API

- After that, we have the data of Server Key

3. Add script to source code of website

- Copy and paste these scripts into the bottom of your <body> tag

<!-- The core Firebase JS SDK is always required and must be listed first -->
    <script src="https://www.gstatic.com/firebasejs/7.16.1/firebase-app.js"></script>
    <!-- TODO: Add SDKs for Firebase products that you want to use https://firebase.google.com/docs/web/setup#available-libraries -->
    <script src="https://www.gstatic.com/firebasejs/7.16.1/firebase-analytics.js"></script>
    <script src="https://www.gstatic.com/firebasejs/7.16.1/firebase-messaging.js"></script>
    <script>
      // Your web app's Firebase configuration
      // For Firebase JS SDK v7.20.0 and later, measurementId is optional
      var firebaseConfig = {
        *firebaseConfig*
      };
      // Initialize Firebase
      firebase.initializeApp(firebaseConfig);
      firebase.analytics();
      const messaging = firebase.messaging()
      navigator.serviceWorker.register('firebase-messaging-sw.js')
      .then((register) => {
        messaging.requestPermission().then(() => {
          messaging.getToken()
          .then((fcmToken) => {
            console.log(fcmToken)
            messaging.onMessage((payload) => {
              console.log("onMessage event fired",payload)
            })
          });
        });
      })
    </script>

- Add file in source firebase-messaging-sw.js (located in public/global folder)

importScripts('https://www.gstatic.com/firebasejs/7.16.1/firebase-app.js');
importScripts('https://www.gstatic.com/firebasejs/7.16.1/firebase-messaging.js');

  var firebaseConfig = {
      *firebaseConfig*
  };// Initialize Firebase
  firebase.initializeApp(firebaseConfig);
  const messaging = firebase.messaging();
  messaging.onBackgroundMessage((payload) => {
    console.log('[firebase-messaging-sw.js] Received background message ', payload);
    const notificationTitle = payload.notification.title;
    const notificationOptions = {
      body: payload.notification.body,
    };
    return self.registration.showNotification(notificationTitle, notificationOptions);
  });
  self.addEventListener('notificationclick', event => {
     console.log(event)
  });