public async Task <IActionResult> SendToSign(
[FromHeader] Guid personUniqueId,
[FromQuery] string documentUniqueId,
[FromBody] SignedDraftModel model,
[FromServices] DocumentsManager manager, [FromServices] ICryptoProviderService cryptoProvider)
{
await manager.SignDocumentAsync(User.Identity.Name, personUniqueId, documentUniqueId, model.Signature, cryptoProvider);
return(Json(new ApiResponse <bool>(true)));
}