public function getCampaigns($skip = 0, $select = 1000)
    {
        $url = sprintf('%s%s?select=%s&skip=%s',
            $this->getApiEndpoint(),
            self::REST_DATA_FIELDS_CAMPAIGNS,
            $select,
            $skip
        );
        $this->setUrl($url)
            ->setVerb('GET');

        $response = $this->execute();

        if (isset($response->message)) {
            $message = 'GET CAMPAIGNS ' . $response->message . ' api user : '
                . $this->getApiUsername();
            $this->helper->debug('getCampaigns', [$message]);
        }

        return $response;
    }