Original standard architecture business logic class

Controllers\ExampleController.cs

using Project.Logic;

namespace Project.Controllers 
{
  public class ExampleController : Controller 
  { 
    public JsonResult GetUser(Guid userId)
    {
      UserModel user = Logic.User.Get(userId);
      return Json(user, JsonRequestBehavior.AllowGet);
    }
  }
}

Logic\User.cs

using Project.Data; // enternal dependency

namespace Project.Logic 
{
  public class User 
  {
    public static UserModel Get(Guid userId) 
    {
      using (var entities = new Entities()) {
        User user = entities.Users.Find(userId);
        // ... transform to UserModel
        return userModel
      }
    }

    public static List<UserModel> Get(Func<Data.User, bool> predicate = null)
    {
      using (var entities = new Entities()) {
        IEnumerable<User> users = predicate == null
          // get all users
          ? entities.Users
          // filter user
          : entities.Users.Where(predicate);

        // .. transform to UserModel
        return models;
      }
    }
    
    public static UserModel Create(UserModel model) { ... }
    
    public static void Update(UserModel model) { ... }
  }
}