How to create EmergencyEventTrigger subscription

How can we create an EmergencyEventTrigger subscription, as it has two properties of the same name ("type") which isn't correct JSON as I understand it.

{"type":"EmergencyEventTrigger","eventEntity":"WIRELESS_CLIENTS","type":"PANIC_BUTTON"}

The first is to indicate the type of event subscribed to,and the second is the typeof emergency to subscribe to.

Please try following JSON format.

{

    "name": "test",

    "notificationType": "EVENT_DRIVEN",

    "dataFormat": "JSON",

    "receiverInfo": {

        "transport": {

            "macScramblingEnabled": false,

            "type": "TransportHttp",

            "hostAddress": "172.19.x.x",

            "port": "8080",

            "https": false,

            "urlPath": "/handler"

        }

    },

    "subscribedEvents": [

        {

            "type": "EmergencyEventTrigger",

            "eventEntity": "WIRELESS_CLIENTS",

            "emergencyType": "PANIC_BUTTON"

        }

    ]

}