diff --git a/User.php b/User.php
index b16fd6e..c07dd5e 100644
--- a/User.php
+++ b/User.php
@@ -17,6 +17,13 @@
     public $phone;
     public bool $eula_signed;
     public bool $privacy_policy_signed;
+    public bool $author;
+    public $accepted_paper_id;
+    public $participation_confirmed;
+    public $participation_confirmed_at;
+    public bool $student;
+    public bool $conference_dinner;
+    public $total_costs;
 
     function __construct()
     {
@@ -34,6 +41,13 @@
         $this->phone = "";
         $this->eula_signed = false;
         $this->privacy_policy_signed = false;
+        $this->author = false;
+        $this->accepted_paper_id = "";
+        $this->participation_confirmed = false;
+        $this->participation_confirmed_at = "";
+        $this->student = false;
+        $this->conference_dinner = false;
+        $this->total_costs = 0;
     }
 
     function __construct1(object $data)