{
  "manageEntity": {
    "action": "Save",
    "entityId": "1036582541",
    "entityType": "Track",
    "nonce": "0x5e81ee73f0f68228750138ae486d51aafed6dabadea630383bc6f668f1eecedb",
    "signature": "0x1d43e9dc5371ee98cd75a267b48a06c08a659a7f356d0973e62a5dd6050ec9cf03b5636b8d4823b7e2c0e74b6e7636880bf6648e1c1e91700142874365ea674b1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}