The postmortem states that the phishing campaign used only a few patterns.

"Delete any emails with the subject line, “Completed: [domain name] – Wire transfer for recipient-name Document Ready for Signature” and “Completed [domain name/email address] – Accounting Invoice [Number] Document Ready for Signature”. These emails are not from DocuSign. They were sent by a malicious third party and contain a link to malware spam."

Did you received phishing with other subjects?