diff --git a/src/Controller/IaphubWebhookEntrypointController.php b/src/Controller/IaphubWebhookEntrypointController.php
index 9678c6f..a5a637c 100755
--- a/src/Controller/IaphubWebhookEntrypointController.php
+++ b/src/Controller/IaphubWebhookEntrypointController.php
@@ -56,6 +56,11 @@ public function index(Request $request): JsonResponse
             return $this->json([], Response::HTTP_UNAUTHORIZED);
         }
 
+        if (!$request->getContent()) {
+            // When add webhook url on Iaphub configuration, Iaphub should verify URL.
+            return $this->json([]);
+        }
+
         $payload = json_decode($request->getContent(), true, 512, JSON_THROW_ON_ERROR);
         $webhook = $this->webhookFactory::build($payload);