{
  "manageEntity": {
    "action": "Save",
    "entityId": "717693239",
    "entityType": "Track",
    "nonce": "0xcab51d211ce6030b7e1fe1faeb2dfee111d137652b4f5baf6d23375698d89ee2",
    "signature": "0x3f6bd86d7cdff47348f679b7ceae6a4c5f5b6da2f476e894eeaadeb9ce92b1202f724542f366911bc260be6e33f864e6e4c389d2e9dd774d609f6d47752361981c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}