MassSendingRequest(MassSendingRequest)

{
    "tagIds": [
        "string"
    ],
    "selectedFriends": [
        "string"
    ],
    "greetingGroupId": "string",
    "timeType": "string",
    "contentType": "string",
    "agentId": "string",
    "account_id": "string",
    "dayOffset": 0,
    "time": "2019-08-24T14:15:22.123Z",
    "sendInterval": "string",
    "autoGrouping": true,
    "batchSize": 0
}