public function update($CampaignId, CampaignDraft $campaignDraft)
    {
        $response = $this->mailjet->put(Resources::$Campaigndraft,
            ['id' => $CampaignId, 'body' => $campaignDraft->format()]);
        if (!$response->success()) {
            $this->throwError("CampaignDraftManager:update() failed", $response);
        }

        return $response->getData();
    }