{
  "manageEntity": {
    "action": "Save",
    "entityId": "427376185",
    "entityType": "Track",
    "nonce": "0xbbd7230a84db23fc3c1faa324803c018104161879a0e7e6e27a5c1290c7a7955",
    "signature": "0x7c5446e37b2dd638c0d6b26bcef1d3c986d42ea90ba10e6145fd8611a100f3897a811c435083cb49cfedf94a4a77e388fa340fb6a41f6191b136a71d34830c2c1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}