public function layoutUpdatesAction()
    {
        $token = $this->getRequest()->getParam('token');
        if (!$token) {
            return $this->getResponse()->setHttpResponseCode(400)->setBody('Invalid parameters');
        }

        /** @var Sheep_Debug_Model_RequestInfo $requestProfile */
        $requestProfile = Mage::getModel('sheep_debug/requestInfo')->load($token, 'token');
        if (!$requestProfile->getId()) {
            return $this->getResponse()->setHttpResponseCode(404)->setBody('Request profile not found');
        }

        $layoutUpdates = $requestProfile->getDesign()->getLayoutUpdates();
        $this->renderArray($layoutUpdates, 'No Data', array('#', 'XML'));
    }