{
  "manageEntity": {
    "action": "Save",
    "entityId": "1086926",
    "entityType": "Track",
    "nonce": "0x310a700ad301a353cfe969684af307da17a4ebd56ca52a6c80733f4e412c8591",
    "signature": "0xbfddb3c6947f23a0d286ad1626a2dac9b9a6ffb81da06654c0f9340fde3d19923a74c8626c3d3390e51acb8f3a57f4df4b41a26ac1d5bc12f6b787819f4d7adc1b",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}