{
  "manageEntity": {
    "action": "Save",
    "entityId": "1341261659",
    "entityType": "Track",
    "nonce": "0xe8c8f0ddedae513d8662b932136318b6abbda021487640c2da66d4ff062429f2",
    "signature": "0x17b177d99574fcedcbb62c3c36f006a19b7b770c27ee97f2a67bdccbc9dc3aa83581daaf7cfae0f4096882ff3decdb1e5c583617a052f9af33cd0996c61adcdd1c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}