Update: Needs Testing - Not Tested

RelayServer/Models/Rtc/RtcNotificationMessage.cs

@@ -0,0 +1,9 @@
+namespace RelayServer.Models.Rtc;
+
+public sealed class RtcNotificationMessage
+{
+    public required string Type { get; set; } // rtc_offer_updated / rtc_answer_updated / rtc_candidate_added
+    public required string ChannelId { get; set; }
+    public string? Username { get; set; }
+    public string? Direction { get; set; }
+}