retrieving data from web api , into MVC

Question

How am I retrieving data from my Web api , into my MVC application ?

I've got a simple CRUD web api that have a GetItem method.

here it is :

 // GET api/UserAwesome/5
    public Item GetItem(int id)
    {
        Item item = db.Items.Find(id);
        if (item == null)
        {
            throw new HttpResponseException(
                            Request.CreateResponse(HttpStatusCode.NotFound));
        }

        return item;
    }

When I run in my browser http://localhost:32120/api/UserAwesome/1, everything is fine and cool, I get the information ..

but how am I retrieve it in my MVC application ?

I've got this ActionResult :

    public ActionResult UserDetails(int userId)
    {
        return View();
    }

what should I place there?