{
  "manageEntity": {
    "action": "Save",
    "entityId": "1101954",
    "entityType": "Track",
    "nonce": "0xd3c06baeb86c852632209729fca4c9c6ce08f66e1e05887d96ae0272735880bc",
    "signature": "0x65ce158acef0694ce7c4ce7406fdf083230e587156ae5a14073aaaae9c89285416413e32f9129c590f33f0295099514fb7013de043115645b7f9d29a059bb8b61c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}