SlotHoldResponse

{
    "hold_hash": "string",
    "expires_at": "2019-08-24T14:15:22.123Z",
    "expires_in_seconds": 1800,
    "training_event": {
        "id": 0,
        "course": "string",
        "location": "string",
        "start_date": "2019-08-24T14:15:22.123Z"
    }
}