Social login on Android with Feathers JS back end

Question

I want to connect my Android and iOS app to the back end of Feathers JS. To authenticate users, I want to have client-side social (Google and Facebook) logins using the appropriate SDKs.

Now I want to have an authorization mechanism also at my end of Perather, so that only authenticated users can access the data. However, I cannot understand how authentication on the client can be associated with authorization on the server.

I think Perather token authentication would fit my needs, but I cannot find them in the documentation. Any ideas / ideas are welcome!