diff --git a/AutoCatCore/Model/Osago.cs b/AutoCatCore/Model/Osago.cs
index 907233c..a025a36 100644
--- a/AutoCatCore/Model/Osago.cs
+++ b/AutoCatCore/Model/Osago.cs
@@ -2,15 +2,15 @@
 {
 	public class Osago
 	{
-		public double Date { get; set; }
-		public string Number { get; set; }
-		public string Vin { get; set; }
-		public string PlateNumber { get; set; }
-		public string Name { get; set; }
-		public string Status { get; set; }
-		public string Restrictions { get; set; }
-		public string Insurant { get; set; }
-		public string Owner { get; set; }
-		public string UsageRegion { get; set; }
+		public double? Date { get; set; }
+		public string? Number { get; set; }
+		public string? Vin { get; set; }
+		public string? PlateNumber { get; set; }
+		public string? Name { get; set; }
+		public string? Status { get; set; }
+		public string? Restrictions { get; set; }
+		public string? Insurant { get; set; }
+		public string? Owner { get; set; }
+		public string? UsageRegion { get; set; }
 	}
 }
diff --git a/AutoCatCore/Model/PlateNumber.cs b/AutoCatCore/Model/PlateNumber.cs
index af7f596..c875a8f 100644
--- a/AutoCatCore/Model/PlateNumber.cs
+++ b/AutoCatCore/Model/PlateNumber.cs
@@ -1,10 +1,5 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-
 namespace AutoCatCore.Model;
 
-//[CreateFromString(MethodName = "AutoCat.Controls.PlateNumber.ConvertFromString")]
 public class PlateNumber
 {
     private readonly string _number;
diff --git a/AutoCatCore/Model/Requests/Credentials.cs b/AutoCatCore/Model/Requests/Credentials.cs
deleted file mode 100644
index 5999c63..0000000
--- a/AutoCatCore/Model/Requests/Credentials.cs
+++ /dev/null
@@ -1,14 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-
-namespace AutoCat.Model.Requests
-{
-	class Credentials
-	{
-		public string Email { get; set; }
-		public string Password { get; set; }
-	}
-}
diff --git a/AutoCatCore/Model/Requests/PagedResponse.cs b/AutoCatCore/Model/Requests/PagedResponse.cs
index 5cca148..d1d3b92 100644
--- a/AutoCatCore/Model/Requests/PagedResponse.cs
+++ b/AutoCatCore/Model/Requests/PagedResponse.cs
@@ -1,13 +1,8 @@
-using System;
-using System.Collections.Generic;
-using System.Text;
+namespace AutoCatCore.Model.Requests;
 
-namespace AutoCatCore.Model.Requests
+public class PagedResponse<T>(int count, string pageToken, List<T> items)
 {
-	public class PagedResponse<T>
-	{
-		public int? Count { get; set; }
-		public string PageToken { get; set; }
-		public List<T> Items { get; set; }
-	}
+	public int Count { get; set; } = count;
+	public string PageToken { get; set; } = pageToken;
+	public List<T> Items { get; set; } = items;
 }
diff --git a/AutoCatCore/Services/Api/ApiService.cs b/AutoCatCore/Services/Api/ApiService.cs
index 23a8c0e..47f4338 100644
--- a/AutoCatCore/Services/Api/ApiService.cs
+++ b/AutoCatCore/Services/Api/ApiService.cs
@@ -1,7 +1,6 @@
 using System.Net.Http.Json;
 using System.Text;
 using System.Text.Json;
-using AutoCat.Model.Requests;
 using AutoCatCore.Model;
 using AutoCatCore.Model.Requests;
 using AutoCatCore.Services.Storage;
@@ -47,12 +46,7 @@ public class ApiService : IApiService
 
     public async Task<User> Login(string email, string password)
     {
-        var credentials = new Credentials { Email = email, Password = password };
-        var json = JsonSerializer.Serialize(credentials, new JsonSerializerOptions {
-            PropertyNamingPolicy = JsonNamingPolicy.CamelCase
-        });
-        var content = new StringContent(json, Encoding.UTF8, "application/json");
-        var response = await _httpClient.PostAsync("user/login", content);
+        var response = await _httpClient.PostAsJsonAsync("user/login", new { email, password });
         var result = await GetDataOrThrow<User>(response);
         SetAccessToken(result.Token);
         return result;