Social login with plugins to Ionic app and login to Appery db


I'm creating Google and Facebook logins to Ionic app. For that I'm using Cordova plugins. After user passes Google/FB login, app receives session token from social network. Is it possible to use Appery DB Social Signing service to login into Appery DB?
I found description of such service ( but having no success to configure it. Always getting DBEL032 error. Pictures how I configured Appery DB Social Signin service are bellow.

First question - does such login of user signing possible?
If yes, then what is wrong signing service?
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