Getting ready to seed more data

SVSim.EmulatedEntrypoint/Models/Dtos/Requests/GameStartRequest.cs

@@ -1,16 +1,21 @@
 using MessagePack;
+using System.Text.Json.Serialization;
 
 namespace SVSim.EmulatedEntrypoint.Models.Dtos.Requests;
 
 [MessagePackObject]
 public class GameStartRequest : BaseRequest
 {
+    [JsonPropertyName("app_type")]
     [Key("app_type")]
     public int AppType { get; set; }
+    [JsonPropertyName("campaign_data")]
     [Key("campaign_data")]
     public string CampaignData { get; set; }
+    [JsonPropertyName("campaign_sign")]
     [Key("campaign_sign")]
     public string CampaignSign { get; set; }
+    [JsonPropertyName("campaign_user")]
     [Key("campaign_user")]
     public int CampaignUser { get; set; }
 }