{
  "manageEntity": {
    "action": "Save",
    "entityId": "141329472",
    "entityType": "Track",
    "nonce": "0xe7b605159b741b9ad36918cd9232b374581468851a66cb747f764ee0a6e9f489",
    "signature": "0xdc247e6565eb0e0a53fad5c782219e634dc9668c407dacf99e0ab6be6a5356f24a9d495e36bccdf61322a7cc33548ab9206d02166a77d3e12d811472d61220991b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}