ability to attach visual signature on pdf document

Closes https://code.vereign.com/code/dashboard/issues/697

javascript/src/iframe/viamapi-iframe.js

@@ -1616,9 +1616,9 @@ message SignatureData {
         documentUUID,
         pdfContentType,
         vCardImageData,
+        signatureData,
         qrCodeImageData,
-        qrCodeCoordinates,
-        signatureData
+        qrCodeCoordinates
       );
       if (signResponse.code !== "200") {
         return encodeResponse("400", "", signResponse.status);