code: def create_payload(self):
          
          payload = super(ConfigTemplate, self).create_payload()
          if 'template_combinations' in payload:
              payload['template_combinations_attributes'] = payload.pop(
                  'template_combinations')
          return {u'config_template': payload}
docs: Wrap submitted data within an extra dict.
  
          For more information, see `Bugzilla #1151220
          <https://bugzilla.redhat.com/show_bug.cgi?id=1151220>`_.