<ul class=" navbar-nav navbar-right">

                <li class="dropdown navbar-user">
                    <a href="javascript:;" class="dropdown-toggle" data-toggle="dropdown">
                        <img src="@User.Identity.GetClaim("FotoPerfilUrl")" alt="" />
                        <span class="d-none d-md-inline">@User.Identity.GetClaim("Nome")</span> <b class="caret"></b>
                    </a>
                    <div class="dropdown-menu dropdown-menu-right">

                        <a class="dropdown-item position-btn-exit" tabindex="-1" href="#">Configurações</a>
                        <a tabindex="-1" href="#">More options</a>
                        <ul class="dropdown-menu">
                           <li class="dropdown navbar-user"><a class="dropdown navbar-user">1</a></li>
                           <li class="dropdown navbar-user"><a class="dropdown-item">1</a></li>
                           <li class="dropdown navbar-user"><a class="dropdown-item">1</a></li>
                        </ul>

                        <form action="@Url.Action("Logout", "Account")" id="signoutForm" method="post" novalidate="novalidate">
                            @Html.AntiForgeryToken()
                            <a href="javascript:document.getElementById('signoutForm').submit()" class="dropdown-item position-btn-exit">Sair</a>
                        </form>

                    </div>

                </li>

            </ul>