{
  "manageEntity": {
    "action": "Save",
    "entityId": "1714477288",
    "entityType": "Track",
    "nonce": "0xaf402f82f6de8c066bdfe2984fa4a2d9e044622ac7e485f28dd13bc224479635",
    "signature": "0x1c2d135510291f001bd5fd4f1971ded0cb99463145c7d7242acc032682e9486c3be5519eb7fb33e01343fe45ef69e2e1d690c027ec0fc2b8544599e5c65bae5d1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}