app/APP/DTO/Register.cs

using System.Text.Json.Serialization;

namespace APP.DTO;

public class Register
{
    [JsonPropertyName("username")] public string Username { get; set; }

    [JsonPropertyName("malId")] public long MalId { get; set; }

    [JsonPropertyName("secret")] public string Secret { get; set; }

    [JsonPropertyName("sauce")] public string Sauce { get; set; }
}