I forgot to include the errors:
NotFoundError: {“errors”:[{“message”:“user: Not a recognized ID: XXXXXXXXXXXXXX”,“help”:“For more information on API status codes and how to handle them, read the docs on errors: Build an app with Asana”}]} The ID is valid
ForbiddenError: {“errors”:[{“message”:“Forbidden”,“help”:“For more information on API status codes and how to handle them, read the docs on errors: Build an app with Asana”}]}