preview_mode: "live" to resolve with real context data (requires context_uid).
Use preview_mode: "sample" to resolve with sample provider data when no real context is available.Bearer authentication header of the form Bearer <token>, where <token> is your auth token.
"invoice"
Context object UID. Required when preview_mode is 'live', optional when preview_mode is 'sample'.
Preview mode. 'live' resolves against a real context object, 'sample' uses provider sample data.
live, sample