{
  "manageEntity": {
    "action": "Save",
    "entityId": "1699130052",
    "entityType": "Track",
    "nonce": "0x5fe42a342eb89d777a0232ca8d0ba5a822281d418a85dc9c9d630ccab22045ba",
    "signature": "0x47c91cba59f62211609439713f1f1e5c439249c455f51095cc2bf596d50abf3c7a96f0fc163473104548359596bdd7ddadee1f657781622c21213605bb9296421b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}