public Guid id { get; set; }
public string name { get; set; }
public string username { get; set; }
public static void Main()
string json = "{\"id\":\"7a5b1113-ba91-4478-9747-88eb6abce250\",\"name\":\"-Va\\u00d1\\u0096n\",\"username\":\"Vain\"}";
Foo foo = JsonSerializer.Deserialize<Foo>(json);
Console.WriteLine(foo.id);
Console.WriteLine(foo.name);
Console.WriteLine(foo.username);
Console.WriteLine(JsonSerializer.Serialize(foo));