diff --git a/src/JsonTrait.php b/src/JsonTrait.php
index c09f0f7..bf86e09 100644
--- a/src/JsonTrait.php
+++ b/src/JsonTrait.php
@@ -13,51 +13,12 @@
  */
 trait JsonTrait
 {
-    /**
-     * @return mixed
-     */
-    private static function decodeJson(string $json)
+    private static function decodeJson(string $json): string|int|bool|\stdClass
     {
-        $result = json_decode($json, false);
-        $errorCode = json_last_error();
-
-        if ($errorCode === JSON_ERROR_NONE) {
-            return $result;
-        }
-
-        // Generate error message
-        switch ($errorCode) {
-            case JSON_ERROR_DEPTH:
-                $error = 'Maximum stack depth exceeded';
-                break;
-            case JSON_ERROR_STATE_MISMATCH:
-                $error = 'Invalid or malformed JSON';
-                break;
-            case JSON_ERROR_CTRL_CHAR:
-                $error = 'Unexpected control character found';
-                break;
-            case JSON_ERROR_SYNTAX:
-                $error = 'Syntax error';
-                break;
-            case JSON_ERROR_UTF8:
-                $error = 'Malformed UTF-8 characters, possibly incorrectly encoded';
-                break;
-            case JSON_ERROR_UTF16:
-                $error = 'Malformed UTF-16 characters, possibly incorrectly encoded';
-                break;
-            default:
-                $error = 'Unknown error';
-                // Find the const name
-                $constants = get_defined_constants(true);
-                foreach ($constants['json'] as $name => $value) {
-                    if (!strncmp($name, 'JSON_ERROR_', 11) && $value === $errorCode) {
-                        $error = $name;
-                        break;
-                    }
-                }
-                break;
+        try {
+            return json_decode($json, false, flags: JSON_THROW_ON_ERROR);
+        } catch (\JsonException $e) {
+            throw new Exception\UnexpectedValueException("Problem decoding JSON : {$e->getMessage()} : '{$json}'");
         }
-
-        throw new Exception\UnexpectedValueException("Problem decoding JSON : {$error} : '{$json}'");
     }
 }
diff --git a/src/Service.php b/src/Service.php
index c3fc856..3f300a5 100644
--- a/src/Service.php
+++ b/src/Service.php
@@ -25,10 +25,8 @@ public function __construct(
 
     /**
      * Call service method
-     *
-     * @return mixed
      */
-    public function __call(string $name, array $params)
+    public function __call(string $name, array $params): string|int|bool|\stdClass
     {
         $data = [
             'method' => $name,