{
  "manageEntity": {
    "action": "Save",
    "entityId": "240294",
    "entityType": "Track",
    "nonce": "0x60cc73a10b2530e5ae4cd27576a617d1812a31b7871f3661284e355d6860238a",
    "signature": "0x46888f9b3ca4e73803b05d27427994b2771b9cb91cc2732ee13878464a59dda65d0b631224891ed8ed29fcc06f89064e70b39a46fdd9d91e4653e47c188a4de01b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}