{
  "manageEntity": {
    "action": "Save",
    "entityId": "1156193285",
    "entityType": "Track",
    "nonce": "0x0a63721c6c7184d11be03a97053b8977e2a8d0d0e9253043578027a406433dd9",
    "signature": "0x1e8e017b5f45eb33bcee25b6379036d7daebcc2dc8650a3ed215f4b96ba100f3337d50e10fdddbc0cf77ca3753358854c2b0ef4639edbb8b0f58762bc386596a1c",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}