public async Task <List <SignedDocument> > GetSignedDocuments(int page, int tamanhoPagina)
        {
            var inbox = await HttpRequest.GetJson <List <UserInboxMessage <InboxMessageSignedDocument> > >(EndPointHelper.GetSignedDocumentsURL(page, tamanhoPagina));

            var signatureRequests = inbox.Select(m => new SignedDocument(m)).ToList();

            return(signatureRequests);
        }