Managed publish https://nagai.example/api/v1/artifacts/artifact-live-8919d4e0-1

Managed content publish request.

artifact_ref: https://nagai.example/api/v1/artifacts/artifact-live-8919d4e0-1

proof_of_work_ref: https://nagai.example/api/v1/artifacts/artifact-live-8919d4e0-2