telegram-bot/Core/Data/BotUser.cs

using System;
using System.ComponentModel.DataAnnotations;

namespace Kruzya.TelegramBot.Core.Data;

public class BotUser
{
    /// <summary>
    /// The unique bot user identifier.
    /// </summary>
    [Key]
    public Guid BotUserId { get; set; }
        
    /// <summary>
    /// The chat identifier where this user is related.
    /// </summary>
    public long ChatId { get; set; }

    /// <summary>
    /// The Telegram User identifier.
    /// </summary>
    public long UserId { get; set; }
}