activestep/Step.Model/DatabaseModels/SessionModel.cs

using System;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;

namespace Step.Model.DatabaseModels
{
    [Table("session")]
    public class SessionModel
    {
        [Key]
        [Column("id")]
        public int SessionId { get; set; }

        [Column("token")]
        public string Token { get; set; }

        [Column("machine_user_id")]
        public int MachineUserId { get; set; }

        [Column("first_login")]
        public DateTime FirstLogin { get; set; }

        [ForeignKey("MachineUserId")]
        public MachineUserModel MachineUser { get; set; }
    }
}