Mailchimp v2.0 API with Membership plugin

Regarding the Remote Ping setup for MailChimp. All the documentation seems to refer to MailChimp's deprecated v1.3 API. v2.0 is current, and doesn't seem to work the same way. I've referred to their API doc, but no matter what I do, I keep getting validation errors related to the email field. Any advice on exactly how the Ping Data field should be set up for v2.0 would be great.