{
  "manageEntity": {
    "action": "Save",
    "entityId": "1180545969",
    "entityType": "Track",
    "nonce": "0x03ea50b84677ab40911327b4e2c3124946bb668c42f659c36f02cea5fa4df66b",
    "signature": "0x8e0eb6519a17abb966d75d4d5e7ee6a62f5b672fdeef8f769458c2ac035d9ad87b5188a3b91a23f37e2534ce4cd454bb2e0b81e640801132dc58a71fb88150731b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}