Seed admin user to database OnModelCreating

I have been browsing internet the whole day and tried whatever I could already. I have no errors and user is created into database but there is no UserRole assigned. Also roles are created just fine and can be visible in database. Why so? Can somebody see what’s the problem in here?

   protected override void OnModelCreating(ModelBuilder builder)
    {
      base.OnModelCreating(builder);

      Guid ADMIN_ID = Guid.NewGuid();
      Guid ROLE_ID = ADMIN_ID;

      builder.Entity<ApplicationRole>().HasData(new ApplicationRole { Name = "User", NormalizedName = "USER", Id = Guid.NewGuid(), ConcurrencyStamp = Guid.NewGuid().ToString() });
      builder.Entity<ApplicationRole>().HasData(new ApplicationRole { Name = "Admin", NormalizedName = "ADMIN", Id = ROLE_ID, ConcurrencyStamp = ROLE_ID.ToString() });

      PasswordHasher<ApplicationUser> hasher = new PasswordHasher<ApplicationUser>();
      builder.Entity<ApplicationUser>().HasData(new ApplicationUser
      {
        Id = ADMIN_ID,
        FirstName = "MrJack",
        LastName = "Jackson",
        UserName = "Administrator",
        NormalizedUserName = "Administrator",
        Email = "[email protected]",
        IsActive = true,
        ProfilePicture = System.IO.File.ReadAllBytes(string.Concat(Path.GetFullPath("Resources\"), "avatar.png")),
        NormalizedEmail = "[email protected]",
        EmailConfirmed = true,
        PasswordHash = hasher.HashPassword(null, "QWERTY"),
        SecurityStamp = string.Empty,
        ConcurrencyStamp = Guid.NewGuid().ToString(),
      });

      builder.Entity<IdentityUserRole<Guid>>().HasData(new IdentityUserRole<Guid>
      {
        RoleId = ROLE_ID,
        UserId = ADMIN_ID
      });

      builder.Entity<IdentityUserRole<Guid>>().HasKey(p => new { p.UserId, p.RoleId });

    }

I think problem is in this part, as user is not assigned in DB to user. This table is empty for some reason, but what is actually the problem?

  builder.Entity<IdentityUserRole<Guid>>().HasData(new IdentityUserRole<Guid>
  {
    RoleId = ROLE_ID,
    UserId = ADMIN_ID
  });

  builder.Entity<IdentityUserRole<Guid>>().HasKey(p => new { p.UserId, p.RoleId });