diff --git a/src/Event.php b/src/Event.php
index c8f9cc1..1862ab7 100644
--- a/src/Event.php
+++ b/src/Event.php
@@ -9,7 +9,7 @@
  *
  * @package Hawk
  */
-final class Event
+final class Event implements \JsonSerializable
 {
     /**
      * @var string
@@ -53,7 +53,7 @@ public function getEventPayload(): EventPayload
     /**
      * @return array
      */
-    public function jsonSerialize()
+    public function jsonSerialize(): array
     {
         return [
             'token'        => $this->integrationToken,
diff --git a/src/Transport/CurlTransport.php b/src/Transport/CurlTransport.php
index 07d63cc..797a6e4 100644
--- a/src/Transport/CurlTransport.php
+++ b/src/Transport/CurlTransport.php
@@ -53,7 +53,7 @@ public function send(Event $event)
         $curl = curl_init();
         curl_setopt($curl, CURLOPT_URL, $this->url);
         curl_setopt($curl, CURLOPT_POST, 1);
-        curl_setopt($curl, CURLOPT_POSTFIELDS, $event->jsonSerialize());
+        curl_setopt($curl, CURLOPT_POSTFIELDS, json_encode($event, JSON_UNESCAPED_UNICODE));
         curl_setopt($curl, CURLOPT_HTTPHEADER, ['Content-Type: application/json']);
         curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
         curl_setopt($curl, CURLOPT_TIMEOUT, 10);