public function scheduleCampaign($CampaignId, $date)
    {
        $response = $this->mailjet->post(Resources::$CampaigndraftSchedule,
            ['id' => $CampaignId, 'body' => $date]);
        if (!$response->success()) {
            $this->throwError("CampaignDraftService:scheduleCampaign failed",
                $response);
        }

        return $response->getData();
    }