{
  "manageEntity": {
    "action": "Save",
    "entityId": "415347",
    "entityType": "Track",
    "nonce": "0xb7c10a6b2771bbc30140efb3053337b38584526688b71db7df024354006a9734",
    "signature": "0xef004ba6749cc2725efd477f207b757c23c83c17f9d19058e6b060e44d947f62159d792e2a0dba75139e6d07467e16ab02fa14d5220e4ea4220f2a4bc39abba11b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}