code: def created_slices(self, user_id=None):
          
          if not user_id:
              user_id = g.user.id
          Slice = models.Slice  # noqa
          qry = (
              db.session.query(Slice)
              .filter(
                  sqla.or_(
                      Slice.created_by_fk == user_id,
                      Slice.changed_by_fk == user_id,
                  ),
              )
              .order_by(Slice.changed_on.desc())
          )
          payload = [{
              'id': o.id,
              'title': o.slice_name,
              'url': o.slice_url,
              'dttm': o.changed_on,
              'viz_type': o.viz_type,
          } for o in qry.all()]
          return json_success(
              json.dumps(payload, default=utils.json_int_dttm_ser))
docs: List of slices created by this user