How can I verify React native expo apple authentication in Php server side? [closed]

Using https://developer.apple.com/documentation/signinwithapplejs this documentation I can verify token in Php server-side which is client gives me using "Embed Sign In with Apple JS"
In react native we use https://github.com/expo/expo/tree/master/packages/expo-apple-authentication this package.
I don't know how can I verify token in Php server-side which is received from this "expo apple authentication."
When I run same code for Sign with apple Js it gives me invalid_client error.
Thanks.