curl --request GET \
  --url http://localhost:9511/api/recordings/{recording_id}/metadata

{
  "transaction_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "duration_ms": 123,
  "start_time": "2023-11-07T05:31:56Z",
  "user_frames": 123,
  "agent_frames": 123
}