code: def to_json(self):
      return {
          "id": self.id,
          "username": self.username,
          "is_admin": self.is_admin,
          "experiment_permissions": [
              p.to_json() for p in self.experiment_permissions
          ],
          "registered_model_permissions": [
              p.to_json() for p in self.registered_model_permissions
          ],
      }
  
label_desc: Use image node_id 11 for calling the User obj's underlying member method code with example usage: obj.to_json() and returns: dict