{
  "manageEntity": {
    "action": "Save",
    "entityId": "1317273211",
    "entityType": "Track",
    "nonce": "0xfff9688e4d1ad6da78d96a763ac1060ea18b3fdd31e56697969d0e4f3c6a2453",
    "signature": "0x1059b5f500ca2d382dc8034fb7a2c007dbbb62825ce28f9940d75a416fbc6347256b85c75fc7109395b96a55f20c5eef242f06d6cfef833359a3ce682a68a41f1c",
    "signer": "0x4a4E686a6442e2Fc2495a7d4363B25c583Ea3c3a",
    "userId": "34815"
  }
}