gsAdd should be called when a digital signature user needs to add a graphic signature image. It can be retrieved via a soap request using the "gsAdd" method to https://api.maxsignatures.com/MdDigitalSignatureApi.php?wsdl.
signRequest:{
The response comes in a soap object containing three elements.
(string) code - A response code. This will be "000" if there is no error
(string) message - A description of the response code
(array) values - Reserved.
The xml for the WSDL can be found here