// POST api/users/5/roles
        public async Task <HttpResponseMessage> Post(string id, PortalRoleModel role)
        {
            // Add user role
            await _userService.AddRoleAsync(id, role.Name);

            return(Request.CreateResponse(HttpStatusCode.Created, (PortalRole)role));
        }
        // DELETE api/users/5/roles
        public async Task <HttpResponseMessage> Delete(string id, PortalRoleModel role)
        {
            await _userService.DeleteRoleAsync(id, role.Name);

            return(Request.CreateResponse(HttpStatusCode.OK));
        }