Setup your application's code

npm install express-jwt express-jwt-authz falcor-express falcor-router --save

Add the following lines to your base code

const checkScopes = jwtAuthz([ 'read:messages' ]);

app.use('/api/model.json', authenticate, checkScopes, falcorExpress.dataSourceRoute(function(req, res) 
  {
    return new Router([
      {...}
    ]);
  }
));

Create an Application in Auth0 dashboard 

Create a Social Generic OAuth2 Provider Connection under Connections / Social section