{
  "manageEntity": {
    "action": "Save",
    "entityId": "452282",
    "entityType": "Track",
    "nonce": "0xb32e9273505f12e3321a08b45d42983df13e1f7acb6736ef0b89b378d12db601",
    "signature": "0xd5649a5083cc8033561bd48a32a4b676b80411ab40d0b077ada248144464511e14fe75dbe46a4d70f07971cee2e8686acc8192890c39eb1ef9a01e4332b2e23c1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}