Добавьте файлы проекта.

YandexMusic.API/Models/Library/YLibrary.cs

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+namespace YandexMusic.API.Models.Library
+{
+    public class YLibrary
+    {
+        public string PlaylistUuid { get; set; }
+        public int Revision { get; set; }
+        public List<YLibraryTrack> Tracks { get; set; }
+        public string Uid { get; set; }
+    }
+}

YandexMusic.API/Models/Library/YLibraryAlbum.cs

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+namespace YandexMusic.API.Models.Library
+{
+    public class YLibraryAlbum
+    {
+        public string Id { get; set; }
+        public DateTime Timestamp { get; set; }
+    }
+}

YandexMusic.API/Models/Library/YLibraryPlaylists.cs

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+using YandexMusic.API.Models.Playlist;
+
+namespace YandexMusic.API.Models.Library
+{
+    public class YLibraryPlaylists
+    {
+        public YPlaylist Playlist { get; set; }
+        public DateTime Timestamp { get; set; }
+    }
+}

YandexMusic.API/Models/Library/YLibrarySection.cs

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+namespace YandexMusic.API.Models.Library
+{
+    /// <summary>
+    /// Раздел библиотеки
+    /// </summary>
+    public enum YLibrarySection
+    {
+        /// <summary>
+        /// Альбомы
+        /// </summary>
+        Albums,
+
+        /// <summary>
+        /// Исполнители
+        /// </summary>
+        Artists,
+
+        /// <summary>
+        /// Плейлисты
+        /// </summary>
+        Playlists,
+
+        /// <summary>
+        /// Треки
+        /// </summary>
+        Tracks
+    }
+}

YandexMusic.API/Models/Library/YLibrarySectionType.cs

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+namespace YandexMusic.API.Models.Library
+{
+    /// <summary>
+    /// Раздел библиотеки
+    /// </summary>
+    public enum YLibrarySectionType
+    {
+        /// <summary>
+        /// Лайки
+        /// </summary>
+        Likes,
+
+        /// <summary>
+        /// Дизлайки
+        /// </summary>
+        Dislikes
+    }
+}

YandexMusic.API/Models/Library/YLibraryTrack.cs

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+namespace YandexMusic.API.Models.Library
+{
+    public class YLibraryTrack
+    {
+        public string AlbumId { get; set; }
+        public string Id { get; set; }
+        public DateTime Timestamp { get; set; }
+    }
+}

YandexMusic.API/Models/Library/YLibraryTracks.cs

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+namespace YandexMusic.API.Models.Library
+{
+    public class YLibraryTracks
+    {
+        public YLibrary Library { get; set; }
+    }
+}

YandexMusic.API/Models/Library/YListenedTrack.cs

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+using YandexMusic.API.Models.Common;
+
+namespace YandexMusic.API.Models.Library
+{
+    public class YListenedTrack
+    {
+        public YTrackId TrackId { get; set; }
+        public DateTime TimeStamp { get; set; }
+    }
+}

YandexMusic.API/Models/Library/YRecentlyListened.cs

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+using YandexMusic.API.Models.Landing.Entity.Entities.Context;
+
+namespace YandexMusic.API.Models.Library
+{
+    public class YRecentlyListened
+    {
+        public string Client { get; set; }
+        public YPlayContextType Context { get; set; }
+        public string ContextItem { get; set; }
+        public List<YListenedTrack> Tracks { get; set; }
+    }
+}

YandexMusic.API/Models/Library/YRecentlyListenedContext.cs

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+using YandexMusic.API.Models.Track;
+
+namespace YandexMusic.API.Models.Library
+{
+    public class YRecentlyListenedContext
+    {
+        public List<YRecentlyListened> Contexts { get; set; }
+        public List<YTrack> OtherTracks { get; set; }
+    }
+}