How to change the default message in Adobe E-Sign

I would like to change the default message which appears when I want to "Review and send" a document for e-signature.

The default message now is "Please review and complete {name}"

I'd imagine the {name} would be a variable based on the document name, but it is not. The recipient gets an email that says exactly: "Please review and complete {name}"

How can I change this?

Many thanks