upd

src/Ryujinx/UI/Models/TempProfile.cs

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+using Ryujinx.Ava.UI.ViewModels;
+using Ryujinx.HLE.HOS.Services.Account.Acc;
+using System;
+
+namespace Ryujinx.Ava.UI.Models
+{
+    public class TempProfile : BaseModel
+    {
+        private readonly UserProfile _profile;
+        private byte[] _image;
+        private string _name = String.Empty;
+        private UserId _userId;
+
+        public static uint MaxProfileNameLength => 0x20;
+
+        public byte[] Image
+        {
+            get => _image;
+            set
+            {
+                _image = value;
+                OnPropertyChanged();
+            }
+        }
+
+        public UserId UserId
+        {
+            get => _userId;
+            set
+            {
+                _userId = value;
+                OnPropertyChanged();
+                OnPropertyChanged(nameof(UserIdString));
+            }
+        }
+
+        public string UserIdString => _userId.ToString();
+
+        public string Name
+        {
+            get => _name;
+            set
+            {
+                _name = value;
+                OnPropertyChanged();
+            }
+        }
+
+        public TempProfile(UserProfile profile)
+        {
+            _profile = profile;
+
+            if (_profile != null)
+            {
+                Image = profile.Image;
+                Name = profile.Name;
+                UserId = profile.UserId;
+            }
+        }
+    }
+}