{
  "manageEntity": {
    "action": "Save",
    "entityId": "1012179",
    "entityType": "Track",
    "nonce": "0x9858e069ffc937f67468b86d56d0e286612f810d82e5e9ad15d43d3fd717385b",
    "signature": "0x0674c0220e9c16f80e41b97366f2404e23fa5dbdb56cb0a2b12471449ac06fe11987b2dd48f9a307b39b85c48e112d3dd1c761b4473f4a1b9de0829c9b23506b1c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}