IstReq

{
    "id": "string",
    "audio": {
        "aid": "string",
        "bits": 0,
        "chnl": 0,
        "encoding": 0,
        "offset": 0,
        "rate": 0,
        "spkn": 0,
        "uri": "string"
    },
    "callback": "string"
}