<s>[INST] Just a few lines of code need help to integrate Google sign-in for Android JWT authentication.

I've been trying to follow Google's guide but having trouble. I've added Google sign-in successfully but having trouble with JWT authentication part. 

I can successfully extract the idToken, but can't verify the idToken at backend. 

Instead of verifying the idToken directly, can I use the `google-id-token-verifier` library to accomplish this?[/INST]