{
  "manageEntity": {
    "action": "Save",
    "entityId": "1764992225",
    "entityType": "Track",
    "nonce": "0x6cd39a36f2c826e839a8eea4d40520ca6226ed1c56fc397124840d8f97afd0e0",
    "signature": "0x77a866f68eccc2a94e7112def0120ce69e1f7c1c3cf281d0572d13b804fa630f7a024f73b28a074c8bb244f54380b7077d194f8212ccb0290bc9d07b64de2df31b",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}