No actions found on the controller that match the request

Sorry for the lame question. I have already read all similar questions and still cannot solve the problem.

I am getting "No action found on the controller that matches the request error when called from ajax:

$.ajax({
        url: '/api/ToyEdit/Post/',
        dataType: "json",
        type: "POST",
        contentType: 'application/json; charset=utf-8',
        data: JSON.stringify({toyId: 1, toy: 'asd'}),
    async: true,
    processData: false,
    cache: false,
    success: function (data) {
        alert(data);
    },
    error: function (xhr) {
        alert(xhr.statusText);
    }
})

      

        
        
        
      

    

Controller:

public class ToyEditController : ApiController
{
    [System.Web.Mvc.HttpGet]
    public EditToyViewModel Get(int? toyId)
    {
        var model = new EditToyViewModel();

        if (toyId.HasValue)
        {
            model.Toy = Data.GetToy(toyId.Value);
        }

        model.Companies = Data.GetCompanies().ToList();

        return model;
    }

    [System.Web.Mvc.HttpPost]
    [System.Web.Mvc.ActionName("Post")]
    public ActionResult Post(int? toyId, string toy)
    {
        var a = toy;
        /*new Task<int>(() => DB.Context.Toys.FirstAsync().Id);*/

        return new EmptyResult(); 
    }
}

      

        
        
        
      

    

Routing:

        routes.MapRoute(
            name: "WebApi",
            url: "api/{controller}/{action}/{id}",
            defaults: new { id = UrlParameter.Optional }
        );

        routes.MapRoute(
            name: "Default",
            url: "{controller}/{action}/{id}",
            defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }
        );

      

        
        
        
      

    

What's wrong with the code?

UPDATE 1:

OK, it works when I use the following code:

public class Toy
{
  public int? toyId {get; set;}
  public string toy {get; set;}
}

[System.Web.Mvc.HttpPost]
[System.Web.Mvc.ActionName("Post")]
public ActionResult Post(Toy toy)
{
    // your necessary codes
}

      

        
        
        
      

    

But how do you pass multiple primitive vars?