How to configure Hub in .net core 3.1 SignalR to access a field and not just a single email?

Question

ASP.NET

I’m doing a chat, I ran into a problem with displaying the user’s Nickname, after changing the database, I don’t know how to access any user fields that I specify when registering

My hub:

using System.Threading.Tasks;
using Microsoft.AspNetCore.SignalR;

namespace Project
{
    
   
    public class ChatHub : Hub
    {
        
        public async Task SendMessage(string message)
        {
            await Clients.All.SendAsync("newMessage", Context.ConnectionId, message);
        }
    }
}

Model Class:

namespace Project.Models
{
    public class User
    {
        public int Id { get; set; }
        public string UserName { get; set; }
        public string Email { get; set; }
        public string Password { get; set; }


        public int? RoleId { get; set; }
        public Role Role { get; set; }


    }
    
}

Account Controller

using System.Collections.Generic;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;
using Microsoft.EntityFrameworkCore;
using System.Security.Claims;
using Microsoft.AspNetCore.Authentication;
using Microsoft.AspNetCore.Authentication.Cookies;
using Project.Models;

namespace RolesApp.Controllers
{
    public class AccountController : Controller
    {
        private ApplicationContext _context;
        public AccountController(ApplicationContext context)
        {
            _context = context;
        }
        [HttpGet]
        public IActionResult Register()
        {
            return View();
        }
        [HttpPost]
        [ValidateAntiForgeryToken]
        public async Task<IActionResult> Register(RegisterModel model)
        {
            if (ModelState.IsValid)
            {
                User user = await _context.Users.FirstOrDefaultAsync(u => u.Email == model.Email);
                if (user == null)
                {
                    
                    user = new User { Email = model.Email, UserName = model.UserName,  Password = model.Password };
                    Role userRole = await _context.Roles.FirstOrDefaultAsync(r => r.Name == "user");
                    if (userRole != null)
                        user.Role = userRole;

                    _context.Users.Add(user);
                    await _context.SaveChangesAsync();

                    await Authenticate(user); // аутентификация

                    return RedirectToAction("Index", "Home");
                }
                else
                    ModelState.AddModelError("", "Некорректные логин и(или) пароль");
            }
            return View(model);
        }
        [HttpGet]
        public IActionResult Login()
        {
            return View();
        }
        [HttpPost]
        [ValidateAntiForgeryToken]
        public async Task<IActionResult> Login(LoginModel model)
        {
            if (ModelState.IsValid)
            {
                User user = await _context.Users
                    .Include(u => u.Role)
                    .FirstOrDefaultAsync(u => u.Email == model.Email && u.Password == model.Password);
                if (user != null)
                {
                    await Authenticate(user); // аутентификация

                    return RedirectToAction("Index", "Home");
                }
                ModelState.AddModelError("", "Некорректные логин и(или) пароль");
            }
            return View(model);
        }
        private async Task Authenticate(User user)
        {
            // создаем один claim
            var claims = new List<Claim>
            {
                new Claim(ClaimsIdentity.DefaultNameClaimType, user.Email),
                new Claim(ClaimsIdentity.DefaultRoleClaimType, user.Role?.Name)
            };
            // создаем объект ClaimsIdentity
            ClaimsIdentity id = new ClaimsIdentity(claims, "ApplicationCookie", ClaimsIdentity.DefaultNameClaimType,
                ClaimsIdentity.DefaultRoleClaimType);
            // установка аутентификационных куки
            await HttpContext.SignInAsync(CookieAuthenticationDefaults.AuthenticationScheme, new ClaimsPrincipal(id));
        }
    }
}

Database connection class

using Microsoft.EntityFrameworkCore;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

namespace Project.Models
{
    public class ApplicationContext : DbContext
    {
        public DbSet<User> Users { get; set; }
        public DbSet<Role> Roles { get; set; }
        public ApplicationContext(DbContextOptions<ApplicationContext> options)
            : base(options)
        {
          //  Database.EnsureDeleted();   // удаляем бд со старой схемой
          //  Database.EnsureCreated();
        }
        protected override void OnModelCreating(ModelBuilder modelBuilder)
        {
            string adminRoleName = "admin";
            string userRoleName = "user";

            string adminEmail = "[email protected]";
            string adminPassword = "lol";

            // добавляем роли
            Role adminRole = new Role { Id = 1, Name = adminRoleName };
            Role userRole = new Role { Id = 2, Name = userRoleName ,};

            User adminUser = new User { Id = 1, Email = adminEmail,  Password = adminPassword, RoleId = adminRole.Id };

            modelBuilder.Entity<Role>().HasData(new Role[] { adminRole, userRole });
            modelBuilder.Entity<User>().HasData(new User[] { adminUser });
            base.OnModelCreating(modelBuilder);
        }
    }
}

The problem is how to access the UserName field of the current user through the hub