Annature x Box Automation

I'm trying to build an automation between Annature and Box. We use Box as a document management system and Annature as e-signing software. I would really like to automate when a document is signed in Annature, have it push back through into Box and stay down to the correct client folder. Just noting that we have Zapier set up but I'm just struggling to dot the i's and cross the t's and get it fully over the line. If anyone's got any experience in this, I'd love to hear from you.