{
  "manageEntity": {
    "action": "Save",
    "entityId": "1336761886",
    "entityType": "Track",
    "nonce": "0xaed9affed7f9449cab6b4177fc474cde9841380112a806f1f70a069436462d41",
    "signature": "0x756164c15d0c975507ad8bb24b2ba164d2980b4befcb444dd336b4084f55bf3231c53a734327adff42b31ead229f37a57ba4d3d3c83a21d8ea72ba3f90b73fec1b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}