code: public Object saveEntityPost(SaveEntityRequest request) throws ApiException {
          ApiResponse<Object> resp = saveEntityPostWithHttpInfo(request);
          return resp.getData();
      }
docs: Save Managed Entity
  The Save Entity endpoint is used to persist an entity and cascade entity relationships.
  @param request Managed Entity Request Object (required)
  @return Object
  @throws ApiException If fail to call the API, e.g. server error or cannot deserialize the response body