diff --git a/README.md b/README.md
index 5bd8302..02a505f 100644
--- a/README.md
+++ b/README.md
@@ -185,6 +185,10 @@ You can simply send a notification to a specific segment with
 `$url` , `$data` , `$buttons` and `$schedule` fields are exceptional. If you 
 provide a `$url` parameter, users will be redirecting to that url.
 
+### Adding more parameters on root level
+
+You can add a body parameter on all above functions if you want to add more parameters (see [Common Parameters section in OneSignal documentation](https://documentation.onesignal.com/reference/create-notification#common-parameters) for more information).
+
 ### Sending a Custom Notification
 
 You can send a custom message with 
diff --git a/src/OneSignalClient.php b/src/OneSignalClient.php
index 4d600c6..810ca52 100644
--- a/src/OneSignalClient.php
+++ b/src/OneSignalClient.php
@@ -132,7 +132,7 @@ public function setParam($key, $value)
         return $this;
     }
 
-    public function sendNotificationToUser($message, $userId, $url = null, $data = null, $buttons = null, $schedule = null, $headings = null, $subtitle = null) {
+    public function sendNotificationToUser($message, $userId, $url = null, $data = null, $buttons = null, $schedule = null, $headings = null, $subtitle = null, $body = null) {
         $contents = array(
             "en" => $message
         );
@@ -171,6 +171,10 @@ public function sendNotificationToUser($message, $userId, $url = null, $data = n
             );
         }
 
+        if(isset($body)){
+            $params = array_merge($params, $body);
+        }
+
         $this->sendNotificationCustom($params);
     }
 
@@ -184,7 +188,7 @@ public function sendNotificationToUser($message, $userId, $url = null, $data = n
      * @param null $headings
      * @param null $subtitle
      */
-    public function sendNotificationToExternalUser($message, $userId, $url = null, $data = null, $buttons = null, $schedule = null, $headings = null, $subtitle = null) {
+    public function sendNotificationToExternalUser($message, $userId, $url = null, $data = null, $buttons = null, $schedule = null, $headings = null, $subtitle = null, $body = null) {
         $contents = array(
             "en" => $message
         );
@@ -223,9 +227,13 @@ public function sendNotificationToExternalUser($message, $userId, $url = null, $
             );
         }
 
+        if(isset($body)){
+            $params = array_merge($params, $body);
+        }
+
         $this->sendNotificationCustom($params);
     }
-    public function sendNotificationUsingTags($message, $tags, $url = null, $data = null, $buttons = null, $schedule = null, $headings = null, $subtitle = null) {
+    public function sendNotificationUsingTags($message, $tags, $url = null, $data = null, $buttons = null, $schedule = null, $headings = null, $subtitle = null, $body = null) {
         $contents = array(
             "en" => $message
         );
@@ -264,10 +272,14 @@ public function sendNotificationUsingTags($message, $tags, $url = null, $data =
             );
         }
 
+        if(isset($body)){
+            $params = array_merge($params, $body);
+        }
+
         $this->sendNotificationCustom($params);
     }
 
-    public function sendNotificationToAll($message, $url = null, $data = null, $buttons = null, $schedule = null, $headings = null, $subtitle = null) {
+    public function sendNotificationToAll($message, $url = null, $data = null, $buttons = null, $schedule = null, $headings = null, $subtitle = null, $body = null) {
         $contents = array(
             "en" => $message
         );
@@ -306,10 +318,14 @@ public function sendNotificationToAll($message, $url = null, $data = null, $butt
             );
         }
 
+        if(isset($body)){
+            $params = array_merge($params, $body);
+        }
+
         $this->sendNotificationCustom($params);
     }
 
-    public function sendNotificationToSegment($message, $segment, $url = null, $data = null, $buttons = null, $schedule = null, $headings = null, $subtitle = null) {
+    public function sendNotificationToSegment($message, $segment, $url = null, $data = null, $buttons = null, $schedule = null, $headings = null, $subtitle = null, $body = null) {
         $contents = array(
             "en" => $message
         );
@@ -348,6 +364,10 @@ public function sendNotificationToSegment($message, $segment, $url = null, $data
             );
         }
 
+        if(isset($body)){
+            $params = array_merge($params, $body);
+        }
+
         $this->sendNotificationCustom($params);
     }