Use RestSharp with ReactiveExtensions and Reactive UI

RestSharpRX.cs

  private IObservable<List<Client>> GetClients()
  {
      var request = new RestRequest("client/", Method.GET);
      var subject = new AsyncSubject<List<Client>>();

      _restClient.ExecuteAsync<ClientResponseDTO>(request, response =>
      {
          subject.OnNext(response.Data.Entities);
          subject.OnCompleted();
      });
      return subject;
  }