SiteSessionStartedNotification

{
    "event": "SiteSessionStarted",
    "version": 0,
    "source": {
        "type": "SiteSession",
        "data": {
            "id": "string",
            "startDate": "2019-08-24T14:15:22.123Z",
            "paymentUserIdentity": {
                "id": "string"
            },
            "site": {
                "id": "string",
                "name": "string"
            }
        }
    }
}