private function createList($listId, $listParameters)
    {
        $providerServiceKey = $listParameters['subscriber_provider'];
        $provider = $this->providerFactory->create($providerServiceKey);
        $subscriberList = new SubscriberList($listId, $provider, $listParameters['merge_fields']);
        $subscriberList->setWebhookUrl($listParameters['webhook_url']);
        $subscriberList->setWebhookSecret($listParameters['webhook_secret']);

        return $subscriberList;
    }