GET /history/map-update

{
  "id": 1,
  "uuid": "string",
  "name": "string",
  "status": "launched",
  "onboardee_company": "string",
  "owner": "string",
  "history_date": "2021-01-01T00:00:00Z",
  "event_type": "string",
  "expected_launch_date": "2021-01-01T00:00:00Z",
  "actual_launch_date": "2021-01-01T00:00:00Z",
  "notes": "string",
  "has_messages": true,
  "external_id": "string",
  "custom": {}
}