diff --git a/Libraries/SPTarkov.Server.Core/Models/Eft/Ws/WsNotificationEvent.cs b/Libraries/SPTarkov.Server.Core/Models/Eft/Ws/WsNotificationEvent.cs
index 2735dd82..a024fb72 100644
--- a/Libraries/SPTarkov.Server.Core/Models/Eft/Ws/WsNotificationEvent.cs
+++ b/Libraries/SPTarkov.Server.Core/Models/Eft/Ws/WsNotificationEvent.cs
@@ -1,4 +1,5 @@
 using System.Text.Json.Serialization;
+using SPTarkov.Server.Core.Models.Common;
 
 namespace SPTarkov.Server.Core.Models.Eft.Ws;
 
@@ -12,5 +13,5 @@ public record WsNotificationEvent
     public NotificationEventType? EventType { get; set; }
 
     [JsonPropertyName("eventId")]
-    public string? EventIdentifier { get; set; }
+    public MongoId EventIdentifier { get; set; }
 }
diff --git a/Libraries/SPTarkov.Server.Core/Models/Spt/Dialog/SendMessageDetails.cs b/Libraries/SPTarkov.Server.Core/Models/Spt/Dialog/SendMessageDetails.cs
index 17a776d8..8303141d 100644
--- a/Libraries/SPTarkov.Server.Core/Models/Spt/Dialog/SendMessageDetails.cs
+++ b/Libraries/SPTarkov.Server.Core/Models/Spt/Dialog/SendMessageDetails.cs
@@ -15,7 +15,7 @@ public record SendMessageDetails
     ///     Player id
     /// </summary>
     [JsonPropertyName("recipientId")]
-    public string? RecipientId { get; set; }
+    public MongoId RecipientId { get; set; }
 
     /// <summary>
     ///     Who is sending this message