LoginRequest.cs

using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Text.Json.Serialization;
using System.Threading.Tasks;

namespace Tsi1.Api.Models
{
    public class LoginRequest
    {
        [Required]
        [JsonPropertyName("username")]
        public string UserName { get; set; }

        [Required]
        [JsonPropertyName("password")]
        public string Password { get; set; }

        [Required]
        [JsonPropertyName("tenantId")]
        public int TenantId { get; set; }
    }
}