{
  "manageEntity": {
    "action": "Save",
    "entityId": "2098092867",
    "entityType": "Track",
    "nonce": "0x42120fb0128165b42d9aa0a10ce24597e1949969e79218361bd03a9d3664c5de",
    "signature": "0x3232b94887c9196c5debecc89ff254b52a9b1dc604cb96efb67af4069062570d3c54a34e92eb33e17aedbd20c555d4a84ca133cef0802fecc2439cddbf7c01121c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}