API.updateSubscriberDRMSingle

This action allows you to update a unit subscription

api_key	Use your API key
login	Use the e-mail address of an account profile that has access to the APIs.
md5_pwd	Use the password from the profile, encrypted in MD5 format.
subscription_code	Use the API code supplied in the “Your subcriptions” page, or recovered by the getAccountSubscriptions API
subscriber_login	Login of the subscriber
book_code	ID of the publication.
extras (optional)	Free field of up to 255 characters

This request sends the character string “ok” if successful.

An error message is sent back in case of problems.