{
  "manageEntity": {
    "action": "Save",
    "entityId": "1133066",
    "entityType": "Track",
    "nonce": "0x97f3f8bb2d52c9e249291785d2c13ebdf9d1c9bc923b80fded31677f73919ca4",
    "signature": "0xfea05931e1b2d52e213a4bd6adf57209bebb3a9c61b6b1e645f75267be303bc462dcfef7d6de75ed25a039c34ff88f1000ac9562dff4e1abbe33127b5c9fa8ba1c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}