diff --git a/src/LaravelSendy.php b/src/LaravelSendy.php
index d75fa91..5dd50c2 100644
--- a/src/LaravelSendy.php
+++ b/src/LaravelSendy.php
@@ -80,16 +80,17 @@ protected function guzzle(string $type, string $request, array $data = [], array
             $mainHeaders = [
                 'Content-Type' => 'application/json',
                 'Accept' => 'application/json',
-                'Authorization' => 'Bearer '.$this->apiKey,
             ];
 
             $headers = is_array($headers) && count($headers) > 0
                 ? array_merge($mainHeaders, $headers)
                 : $mainHeaders;
 
-            $response = $client->$type($this->apiUrl.$request, [
+            $response = $client->{$type}($this->apiUrl.$request, [
                 'headers' => $headers,
-                'body' => json_encode($data),
+                'body' => json_encode(array_merge($data, [
+                    'api_key' => $this->apiKey,
+                ])),
             ]);
 
             $responseObject = $response->getBody()->getContents();
diff --git a/src/Resources/Campaigns.php b/src/Resources/Campaigns.php
index 6338fb0..3d2f861 100644
--- a/src/Resources/Campaigns.php
+++ b/src/Resources/Campaigns.php
@@ -9,10 +9,7 @@ class Campaigns
 {
     public function create(array $data)
     {
-        $data = CompaignDTO::from($data)->toArray();
-
-        // validate the data
-        // $this->validate($data);
+        $data = CompaignDTO::validateAndCreate($data)->toArray();
 
         return LaravelSendy::post('/api/campaigns/create.php', $data);
     }
diff --git a/src/Resources/Subscribers.php b/src/Resources/Subscribers.php
index 382b322..10879de 100644
--- a/src/Resources/Subscribers.php
+++ b/src/Resources/Subscribers.php
@@ -9,9 +9,7 @@ class Subscribers
 {
     public function subscribe(array $data)
     {
-        $data = SubscribersDTO::from($data)->toArray();
-
-        // validate the data
+        $data = SubscribersDTO::validateAndCreate($data)->toArray();
 
         return LaravelSendy::post('subscribe', $data);
     }