Use long

Application/Tracks/Commands/CreateTrackCommand.cs

@@ -5,7 +5,7 @@ using Musify.Application.Tracks.Responses;
 namespace Musify.Application.Tracks.Commands
 {
     public record CreateTrackCommand(
-        Guid UserId,
+        long UserId,
         string Title,
         Guid PictureIntentId,
         Guid AudioIntentId)

Application/Tracks/Commands/DeleteTrackCommand.cs

@@ -4,7 +4,7 @@ using Mediator;
 namespace Musify.Application.Tracks.Commands
 {
     public record DeleteTrackCommand(
-        Guid UserId,
+        long UserId,
         Guid TrackId)
         : ICommand<Result>;
 }

Application/Tracks/Commands/RequestTrackUploadUrlsCommand.cs

@@ -5,7 +5,7 @@ using Musify.Application.Tracks.Responses;
 namespace Musify.Application.Tracks.Commands
 {
     public record RequestTrackUploadUrlsCommand(
-        Guid UserId,
+        long UserId,
         string PictureFileType,
         string PictureContentType,
         string AudioFileType,

Application/Tracks/Queries/GetTrackStreamQuery.cs

@@ -4,6 +4,6 @@ using Musify.Application.Tracks.Responses;
 
 namespace Musify.Application.Tracks.Queries
 {
-    public record GetTrackStreamQuery(Guid TrackId, Guid UserId)
+    public record GetTrackStreamQuery(Guid TrackId, long UserId)
         : IQuery<Result<TrackStreamResponse>>;
 }

Application/Tracks/Queries/GetTracksByUserIdQuery.cs

@@ -6,7 +6,7 @@ using Musify.Application.Tracks.Responses;
 namespace Musify.Application.Tracks.Queries
 {
     public record GetTracksByUserIdQuery(
-        Guid UserId,
+        long UserId,
     string? Name = null,
         int PageNumber = 1,
         int PageSize = 10)