{
  "manageEntity": {
    "action": "Save",
    "entityId": "1322840173",
    "entityType": "Track",
    "nonce": "0x6a9b0c54e015f2c16137b6aeeca0ab3741282f7326c185c9db979d38722a418e",
    "signature": "0x4df855f991b84626c109a1419822d2ccf27253dd4ee90c58e5c1e8b1ba0c4972623e048a6e56599e878486db5ed7bc295a19857e8598e9f0a8c15d89c99d6e0d1c",
    "signer": "0x5abad058d33E1C0C0A69d85BA3181678C1721765",
    "userId": "632918751"
  }
}