public function listJsonAction()
    {
        $em = $this->getDoctrine()->getManager();

        /** @var \Kitchenit\AdminBundle\Services\DataTables\JsonList $jsonList */
        $jsonList = $this->get('json_list');
        $jsonList->setRepository($em->getRepository('EcommerceBundle:Invoice'));

        $response = $jsonList->get();

        return new JsonResponse($response);
    }