Transferring react client-side google sign-in to ASP.NET server-side

I am using react-google-login library to let users sign in my application on the client-side through Google, which works fine and returns token and profile information.

  <GoogleLogin
      clientId="XXXX.apps.googleusercontent.com"
      buttonText="Login"
      onSuccess={responseGoogle}
      onFailure={responseGoogle}
      cookiePolicy={'single_host_origin'}
  />

 const responseGoogle = (response) => {
     console.log(response);
 }

Below is the configuration on the server to enable Google Authentication:

services.AddAuthentication()
    .AddGoogle(options =>
    {
        IConfigurationSection googleAuthNSection = 
            Configuration.GetSection("Authentication:Google");

        options.ClientId = googleAuthNSection["ClientId"];
        options.ClientSecret = googleAuthNSection["ClientSecret"];
    });

But, I do not how to transfer this successful login to the asp.net server-side. How can I use the token sent by google to sign in the user on the server side? I would like to do this for two cases: (a) the email in the system does not match the gmail, (b) the email in the system matches the gmail. I appreciate any help.