Updates an account's Billing Information using a token generated by Recurly.js. Returns the account's current Billing Information.

Recurly.js allows you to collect customer Billing Information and tokenize it, preventing your servers from having to handle credit card information. When you send these tokens to Recurly through our API, we unpack the token and update Billing Information accordingly.

When Billing Information is updated, it is only saved if valid. If the account has a past due invoice, the outstanding balance will be collected to validate the Billing Information.

If you want to create an account at the same time, you should use the Account API end-point instead and include billing info with your request.