{
  "manageEntity": {
    "action": "Save",
    "entityId": "1838543551",
    "entityType": "Track",
    "nonce": "0xa51286a11da6b0880ae2efe0630f95935f9cde0b95ce314f9f1922d943bd955c",
    "signature": "0x4efc46dc2abcba2211cba3ae7bae11c3d33d88266a57970dce676329a1888ca41fe1fd3b1dd0c20af877676ec32d0420f0a7195ee1e9507dc0348cf02fc572741b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}