BatchMessage

{
    "content": "My super awesome batch message",
    "deliveryreporturl": "http://your.domain.com/delivery/report/path",
    "destinations": [
        "447777777777",
        "447777777778",
        "447777777779"
    ],
    "schedule": "Wed Jul 19 2017 20:26:28 GMT+0100 (BST)",
    "sender": "YourCompany",
    "tag": "SummerSpecial",
    "ttl": 10
}