{
  "respondent": "demo-contact-ui",
  "answers": {
    "program": "Synthetic workshop",
    "session": "Demo A",
    "interest": 0,
    "preferred_date": "2026-10-15",
    "topics": ["Demo X", "Demo Y"],
    "participants": [
      { "participant_ref": "demo-person-a", "category": "Demo beginner" },
      { "participant_ref": "demo-person-b", "category": "Demo advanced" }
    ],
    "notes": "Synthetic example only.",
    "portal_source": "demo-portal"
  },
  "submitted_at": "2026-01-01T00:00:00Z",
  "replace": true,
  "expected_version": 0
}