Where are the signature properties stored? How can they be extracted?

Summary:

After activity submission, where are the customer signature stored? How can we extract this signature properties?

Content (please ensure you mask any confidential information):

We have a scenario where the customer signs off (place their signature on the signature pad in the activity end screen) before closing the activity. We want to know where will this signature properties stored.

Property Type: File

GUI: Signature Element

Given that we set the retention period in OFS to 90 days. Any customer signature we need to extract past the 90 days cannot be done. We had to extract the customers signature in case of conflicts/disputes hence the signature serves as an evidence.