From the frontend of signing UI, once the signature is successful, the customer would be redirected to the callback URL specified in the API. This way you can continue with the customer journey on your website. We would append a success parameter and the document id and the signer id into the redirection. Example, if the callback URL is,
the redirection would be to
https://example.com/?success=true&document_id=<doc_id>&signer_id=
In case the callback URL already has a URL parameter, for example:
https://example.com/?param_name=param_value
The redirection would be to the same URL with new parameters appended:
https://example.com/?param_name=param_value&success=true&document_id=<doc_id>&signer_id=