Sankar

**Step 1:** go to https://developers.google.com/oauthplayground/ 1.Select the autorize api and after fill the **`input your own scopes (email, https://www.googleapis.com/auth/firebase.messaging)`** once it is complete after displayed the client id and client...

**Step 1:** go to https://developers.google.com/oauthplayground/ 1.Select the autorize api and after fill the **`input your own scopes (email, https://www.googleapis.com/auth/firebase.messaging)`** once it is complete after displayed the client id and client...