Implemented variable data instead of hardcoded

src/Umbraco.Core/Models/UserData.cs

@@ -0,0 +1,19 @@
+using System.Runtime.Serialization;
+
+namespace Umbraco.Cms.Core.Models
+{
+    [DataContract]
+    public class UserData
+    {
+        [DataMember(Name = "name")]
+        public string Name { get; }
+        [DataMember(Name = "data")]
+        public string Data { get; }
+
+        public UserData(string name, string data)
+        {
+            Name = name;
+            Data = data;
+        }
+    }
+}