public async Task UpdateDashboard(UserId user, DashboardConfig dashboard)
 {
     var dashboardModel = new DashboardConfigModel(
         dashboard.Id,
         dashboard.Name,
         dashboard.Tags
         .Select(t => new DashboardConfigTagModel(t.Tag, t.Target))
         .ToList());
     await _repository.AddOrUpdateDashboard(user, dashboardModel);
 }