Connect / register Google with one click, access personal data

Question

I just started using google on-tap sing-in / registration in my new application. It works fine, except that I do not know how I can request user permissions to access cloud data?

client.verifyIdToken(
    token,
    CLIENT_ID,
    function(e, login) {
      var payload = login.getPayload(); // <-- payload just containt name,email and picture. I want more
      var userid = payload['sub']; 
    });

Answer 1

" Google" . , One-Tap login_hint, gapi.auth2.init, gapi.auth2.getAuthInstance().signIn() , .

gapi.auth2.authorize ( gapi.client API Google, init/signIn).