Access userinfo from ADFS system

I have this scenario :

  1. I have tried to log in to ADFS system, from an URL API directly, so they return to me an access token
  2. After that, I use the token to access the userinfo resources but I get an empty object: {}

How can I get the details of an user in ADFS system from my API auth0, using the access token ?
Team, thanks for your answer :slightly_smiling_face: