Document Signing in iFrame

Confussed

Howdy, am new to Documentum, so don't kill me please😊. Has anyone any experience with integrating document signing solutions with Documentum. Example of a use case as follows, document signing transaction (workflow) is triggered in Documentum by a user. All data etc is captured in Documentum front end and sent across from Documentum to the third party signature solution which processes the transaction. The PDF document for signature is assembled in the third party signature solution. The Third party signing interface is then rendered in Documentum utilising iFrame, for example. The user signs the document in Documentum (iFrame). The third party application finalises the the transaction and sends the signed document back to Documentum for completion of the workflow. It his type of transaction possible, using iFrame?

Any guidance is appreciated. Thank you