Now supports saving card groups, this is probably the ugliest code ive ever written but anything to avoid 20 cardgroup properties. we should see if there's a better way, it could probably be a lot cleaner

TOOHUCardAPI/DTO/PlayerDataRequestObjects.cs

@@ -1,10 +1,20 @@
 using System.Collections.Generic;
+using Newtonsoft.Json;
 
 namespace TOOHUCardAPI.DTO
 {
-    public class PlayerDataGetRequestObject
+    public class PlayerDataGetRequestObject : AbstractRequest
     {
-        public string Method { get; set; }
         public Dictionary<string, string> Ids;
     }
+
+    public class PlayerDataSaveCardGroupRequestObject: AbstractRequest
+    {
+        public string SteamId { get; set; }
+        public string UserId { get; set; }
+        [JsonProperty("group_key")]
+        public string GroupKey { get; set; }
+        [JsonProperty("group_data")]
+        public string GroupData { get; set; }
+    }
 }