{
  "manageEntity": {
    "action": "Save",
    "entityId": "1790645467",
    "entityType": "Track",
    "nonce": "0xac4696192d454e1945e8c4ce10566c95853ea64d4a0d99edc115e9cea3c910bb",
    "signature": "0x5c9857b9a22bb511ce8260964196b92e5fd8c14b7c882c190782cef28255e0d61eb567aef2e77e10fdfe43f8f5d13da0a9c18004f5c820c23f064c47a0b9b3ec1b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}