{
  "manageEntity": {
    "action": "Save",
    "entityId": "1247192541",
    "entityType": "Track",
    "nonce": "0xebdef0d64fef63295a5de1cb66d5670e15ed84cc55a3fb56494b23913b84931b",
    "signature": "0xe540c4c259af10d0655ff9f8ed1d20646c6bc49d6da561ecb2522b73eb7ff0886332f899f7d6bf9dbd219d1b2d3127a4ecc539a84c827660a7748c93499859451b",
    "signer": "0xD9254B079e0e1571E56512C57188F2eec899054f",
    "userId": "854498636"
  }
}