Note: you are viewing the development version of Schema.org. See How we work for more details.

requiresSubscription

A Schema.org Property
Indicates if use of the media require a subscription (either paid or free). Allowed values are true or false (note that an earlier version had 'yes', 'no').
Values expected to be one of these types
Boolean
MediaSubscription
Used on these types
ActionAccessSpecification
MediaObject

Source

https://github.com/schemaorg/schemaorg/issues/1741