{
  "manageEntity": {
    "action": "Save",
    "entityId": "699580670",
    "entityType": "Track",
    "nonce": "0xbccd794fb13cb221f93dba510620db626ebbdf32766902912381b493c8b17fbe",
    "signature": "0x4d3953bcabe1459d035c0aa3cc7e984a2a087bf1c55a1a0a945aa8a1726433404793f6453e857bd4052b4772e35a2f1ca87734f405f3b0ccb67daafd1d8e2a221b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}