{
  "manageEntity": {
    "action": "Save",
    "entityId": "80220",
    "entityType": "Track",
    "nonce": "0xb9348ad58b890976780a051a91b591614e940355cb7ab572dbd8238f658e1b05",
    "signature": "0xa9d09ad24276fab98fc661fdda83226fa842982864c3b23b649c62ba36279d5960f94932d4e173e8f62d26825946975ec9c38f8cc58c0294d1d20661f1e75d8b1b",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}