diff --git a/src/Kore.php b/src/Kore.php
index 2c15dcb..8549a08 100644
--- a/src/Kore.php
+++ b/src/Kore.php
@@ -7,17 +7,21 @@ use phpseclib3\Crypt\PublicKeyLoader;
 class Kore
 {
     private $url = 'https://httpbin.org';
+    public $privateKey;
+    public $drone;
+    public function __construct($privateKey, $drone) {
+        $this->privateKey = $privateKey;
+        $this->drone = $drone;
+    }
 
-    public function __construct(public $privateKey, public $drone) {}
-
-    public function signBody(string|array $body, string|bool $password = false)
+    public function signBody($body, $password = false)
     {
         $privateKey = PublicKeyLoader::loadPrivateKey(base64_decode($this->privateKey), $password);
         $sig = $privateKey->sign(json_encode($body));
         return base64_encode($sig);
     }
 
-    public function verifySignature(string $signature, string|array $message, $key)
+    public function verifySignature($signature, $message, $key)
     {
         $publicKey = PublicKeyLoader::loadPublicKey($key);
         return $publicKey->verify(json_encode($message), $signature);