public function getOrdersResponse($params = [])
    {
        $resource = 'campaigns/' . $this->campaignId . '/orders.json';
        $resource .= '?' . http_build_query($params);

        $response = $this->sendRequest('GET', $this->getServiceUrl($resource));

        $decodedResponseBody = $this->getDecodedBody($response->getBody());

        return new GetOrdersResponse($decodedResponseBody);
    }