{
  "manageEntity": {
    "action": "Save",
    "entityId": "833321",
    "entityType": "Track",
    "nonce": "0xbc02fbed821621993e33bbe72f65c96763ba776c515eeda14d5cf8708da8ef1d",
    "signature": "0x39f18fc837893ddd28d6fb370fbf3bf79775dedf98342d579eb647a853758bbe435ae19218f67f1381bf6a4e9962a5ef7277b06abb774cd0e04cc098f379751e1c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}