{
  "manageEntity": {
    "action": "Save",
    "entityId": "178828",
    "entityType": "Track",
    "nonce": "0x32c871350a4c92978f326ccad5d31dd2baeed2a710a2bef8fa0b82f1e8673f6b",
    "signature": "0xe88f0adb04c0cb73b0ffb00c6d56ec19ba9ed4368e30d0391639113056f71458590ac2abbcc0825f19a2267c4466db07a84219c72e2a69064c6589460c426cfc1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}