Users table:

    public class User : BaseEntity
{
    public string UserName { get; set; }
    public string AccountName { get; set; }

   public List<Site> Sites { get; set; }

}

Site Table:

    public class Site : BaseEntity
    {
        public string SiteName{ get; set; }
}

UserSites table

 {
        public string UserId { get; set; }
 public string SiteId { get; set; }
}

Each user might have multiple sites, so how to model entity when I want all site entities inside a user object

var user = dbContext.User.Include("Site").FirstOrDefault();

I need all sites inside this user object but its null