We use embedded signing via the DocuSign REST API. When a user of our app is first sent to the DocuSign embedded signing view, they are asked to set a signature. When we next send the user to DocuSign, it remembers their signature from last time. As we are using DocuSign embedded signing from our custom web app, these uses do not have DocuSign accounts. I am looking for a way that a user - or our administrators - can clear a signature that has previously been set for an embedded user.
I found this answer on Stack Overflow: https://stackoverflow.com/questions/33782103/possibility-of-changing-the-signature-for-embedded-users-docusign-api
This suggests that it is possible to clear a saved signature for an embedded user. However, the link that answer provides to the DocuSign documentation is broken, and I cannot find the page by searching the documentation.
How can the user, or our administrators, clear the signature that DocuSign has remembered for an embedded user in embedded signing view?