{
  "manageEntity": {
    "action": "Save",
    "entityId": "1798462889",
    "entityType": "Track",
    "nonce": "0x92754ac3b5865781ecee4afecfc9531699811ff6713cc7e2906c650ab5adb064",
    "signature": "0xc6c1292f3860e91fa31161eaa9844b92cd0913b393c5edfd6707405c3e9a26616490fbfa97fc402c832a85bf52fef5f74290fb99142cb830f9b2b8be8f9a42d51b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}