Braintree - Pass through custom data with a subscription

Question

Is it possible to pass through custom data when creating a new subscription?

I can see it's possible and documentation for transaction::sale but I can't see anything for subscriptions:

https://developers.braintreepayments.com/javascript+php/guides/recurring-billing/create

If so what key values should I be setting inside

Braintree_Subscription::create

Answer 1

I work as a developer for Braintree. Custom fields only exist as properties of transactions and customers. They are not supported for subscriptions at this time.