MailChimp Parsing Error

I’ve setup my mailchimp api and when checking it with the ‘initialize call’ button everything seems to work, but when I run through the app itself I’m receiving the following error. Any ideas?

Error connecting to Mail Chimp - Add Member: {“type”:“http://developer.mailchimp.com/documentation/mailchimp/guides/error-glossary/",“title”:"JSON Parse Error”,“status”:400,“detail”:“We encountered an unspecified JSON parsing error.”,“instance”:""}

From what I can tell its saying my JSON body is incorrect, but I can’t figure out why.

Figured it out

Mailchimp was looking for a ‘true/false’ value and bubble was sending a ‘yes/no’ value