{
  "manageEntity": {
    "action": "Save",
    "entityId": "74031",
    "entityType": "Track",
    "nonce": "0x9300600c7996c2e5fd89ca2b2ca85901a01f006b203d5a0d56bcc2406bf1b905",
    "signature": "0x9836ab6800ea2dbb234bac7a152d520a9094d3536555e23a15619b6b8df9d4ca66b5de6c9be809dd931db13bdd443a01d9bbb25b2e693c621d9051bf8c9892f81b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}