Get Instagram data with Ionic.io

I use Ionic Cloud to login with instagram: $ionicAuth.login(‘instagram’).then( … );
when logged in i try to get the list of follows with $http.get(“https://api.instagram.com/v1/users/self/follows?access_token=”+$ionicAuth.getToken())

I get an error saying the token is invalid, where does Ionic cloud store the token?