{
  "manageEntity": {
    "action": "Save",
    "entityId": "1111484",
    "entityType": "Track",
    "nonce": "0xbba6bde85ed90e94305f0c0b1f0fab8c5964c300be043e2078e085c5d67555de",
    "signature": "0x69837d699acb4febe9863e7f6cdcf530938d2c1c1cb627c3a062c35dc1c64a867ae477e2ed9a8d53e5e736e9b05d234d91bfd662589ef53750cc35fe47fda4e41c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}