curl --request PATCH \
  --url https://api.truedy.ai/api/public/v1/contacts/{contact_id} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "first_name": "Jane",
  "email": "jane@example.com",
  "custom_fields": {
    "status": "active"
  }
}
'

{
  "data": {
    "id": "cnt_d4e5f6a7",
    "name": "Jane Doe-Smith",
    "phone": "+12125551234",
    "email": "jane@acme.com",
    "folder_id": "folder_abc123",
    "custom_fields": {
      "company": "Acme Corp",
      "lead_score": "92",
      "region": "Northeast"
    },
    "call_count": 3,
    "last_called_at": "2026-04-04T14:00:00Z",
    "created_at": "2026-03-15T09:00:00Z",
    "updated_at": "2026-04-05T10:22:00Z"
  },
  "meta": {
    "request_id": "req_32e7531c",
    "ts": "2026-04-05T10:22:00Z"
  }
}