{
  "manageEntity": {
    "action": "Save",
    "entityId": "1375811128",
    "entityType": "Track",
    "nonce": "0xd1cb7a4dc959721969e76f1e330cb1c37871e918fc0bfbf5299e3379872bfdf3",
    "signature": "0xd8121ce356bed82060ca0689a2aea1753ef326ff2ca492397982c92f6f14954978eefbee83edbbc5e446023c863836188c9364b5bf2ab7871ecf513eb1aed8d21b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}