diff --git a/lib/Service/SubscriptionService.php b/lib/Service/SubscriptionService.php
index 3dd770c..1d2b95a 100644
--- a/lib/Service/SubscriptionService.php
+++ b/lib/Service/SubscriptionService.php
@@ -43,14 +43,13 @@ class SubscriptionService {
 		}
 	}
 
-	public function create(string $userId, string $collectionName, string $transport, int $expirationTimestamp, $data, ?int $creationTimestamp = null) {
+	public function create(string $userId, string $collectionName, string $transport, int $expirationTimestamp, ?int $creationTimestamp = null) {
 		$subscription = new Subscription();
 		$subscription->setUserId($userId);
 		$subscription->setCollectionName($collectionName);
 		$subscription->setTransport($transport);
 		$subscription->setCreationTimestamp($creationTimestamp ?? time());
 		$subscription->setExpirationTimestamp($expirationTimestamp);
-		$subscription->setData(json_encode($data));
 		$subscription = $this->mapper->insert($subscription);
 
 		return $subscription;
diff --git a/lib/Transport/TransportManager.php b/lib/Transport/TransportManager.php
index 712322e..bb8e2bf 100644
--- a/lib/Transport/TransportManager.php
+++ b/lib/Transport/TransportManager.php
@@ -27,18 +27,21 @@ declare(strict_types=1);
 namespace OCA\DavPush\Transport;
 
 use OCP\EventDispatcher\IEventDispatcher;
+use OCP\Server;
 
 use OCA\DavPush\Events\RegisterTransportsEvent;
 use OCA\DavPush\PushTransports\WebPushTransport;
-use OCA\DavPush\PushTransports\WebhookTransport;
+//use OCA\DavPush\PushTransports\WebhookTransport;
 
 class TransportManager {
 	private array $transports = [];
 
-	public function __construct(IEventDispatcher $dispatcher) {
+	public function __construct(
+		IEventDispatcher $dispatcher,
+	) {
 		// register integrated transports
-		$this->registerTransport(new WebPushTransport());
-		$this->registerTransport(new WebhookTransport());
+		$this->registerTransport(Server::get(WebPushTransport::class));
+		//$this->registerTransport(ContainerInterface::get(WebhookTransport::class));
 
 		// register transports provided by other apps
 		$event = new RegisterTransportsEvent($this);