Hide payment.json and signature.json for user in receipt

[caroliss]

Description

When the user submits a form with payment and signature steps, json-files for payment and signature are created. These are needed in the reception of the form in our reception system, but we dont want the user to have directly access to these json-files. This because the json format is not user friendly for our regular users. It also contains personal information (SSN) which we dont want in the files included in the receipt, because we publish documents that are part of the submission.

Additional Information

No response