Is it possible to retrieve chain of custody metadata for screen recordings via Bulk Export API?

Context:
Genesys Cloud 2024-01. Exporting screen recordings for legal discovery. Bulk export jobs complete, but resulting S3 objects lack required audit trail fields. Standard metadata only shows timestamp, missing custodian handoff details.

Question:
Is it possible to include full chain of custody metadata in the bulk export payload for screen recordings? Current API docs suggest this is voice-only. Need specific JSON structure or workaround to satisfy legal hold requirements without manual re-processing.