Improve bunq import.

app/Services/Bunq/Id/BunqId.php

@@ -31,6 +31,18 @@ class BunqId
     /** @var int */
     private $id = 0;
 
+    /**
+     * BunqId constructor.
+     *
+     * @param null $data
+     */
+    public function __construct($data = null)
+    {
+        if (!is_null($data)) {
+            $this->id = $data['id'];
+        }
+    }
+
     /**
      * @return int
      */
@@ -46,4 +58,14 @@ class BunqId
     {
         $this->id = $id;
     }
+
+    /**
+     * @return array
+     */
+    public function toArray(): array
+    {
+        return [
+            'id' => $this->id,
+        ];
+    }
 }