//POST: desbanir um user
public void PostBanUser(SalaIdUsernameModel model)
{
using (var context = new ApplicationDbContext())
{
SalaAccess sala = new SalaAccess();
string userId = RequestContext.Principal.Identity.GetUserId(); //id de quem realizou o pedido
var userStore = new UserStore <ApplicationUser>(context);
var userManager = new UserManager <ApplicationUser>(userStore);
string idUser = userManager.FindByName(model.Username).Id; //id do user a desbanir
sala.DesbanirUser(model.SalaId, userId, idUser);
}
}