{
  "manageEntity": {
    "action": "Save",
    "entityId": "1131690",
    "entityType": "Track",
    "nonce": "0xe47d0f3ce6e2e9534f631b481538241f074e8e15e9635a916d2d7e08e01c0f0a",
    "signature": "0x7f12b21a322ff19693dae650dac177ea1799930f9fbe1d7fa676ff5f852d556b225f6da189b4c1ed0459de79d1adab17f7410a179f12e9e091982b806f9322ce1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}