{
  "manageEntity": {
    "action": "Save",
    "entityId": "1063117917",
    "entityType": "Track",
    "nonce": "0xaaf2b57a4211076a0e86ccc3581dfebdc7328749087d6909829936d26deb94f7",
    "signature": "0xac9889eaa50f7edde66027d97ac079977133412450af7efbd37e5c648f35f0cc236e7269e6c7d959cd5206de4af3145bd2e1410266c699876f75aca106e88b501c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}