namespace Application.Features.Admin.Channel.YouTubePubSub.Get; public sealed record SubscriptionItem( string YouTubeChannelID, int? ChannelID, string? ChannelName, string? Handle, string? ThumbnailUrl, bool HasInternalChannel, bool IsActive, bool IsSubscribed ); public sealed record Response( IReadOnlyList Items, int TotalCount, int SubscribedCount, string CallbackUrl );