code: public function get($id)
  	{
  		$this->getResponse()
  			->setStatusCode(Response::STATUS_CODE_200);
  		
  		$userService = $this->getServiceLocator()->get('user.service.user');
  		
  		try {
  			$data = $userService->get($id);
      	} catch(\Exception $e) {
      		$this->getResponse()
      			->setStatusCode(Response::STATUS_CODE_500);
  			$data = $e->getMessage();
      	}
  		
  		return new JsonModel(array(
  			'data' => $data
  		));
  	}
docs: Respond to HTTP GET method with :id
  @see \Zend\Mvc\Controller\AbstractRestfulController::getList()