{
  "manageEntity": {
    "action": "Save",
    "entityId": "925191536",
    "entityType": "Track",
    "nonce": "0x2feb7d67e9b99f21fdb1d16edf76ce720195015e12c7a9dc539cfca9e59bed20",
    "signature": "0xcbd2eacecee10ed42b43f2fb2771eacf27a28569f7632592f88bbcde04adb7940eeeab82956b2e7fa8829c9e83d96f2bbb8c455f0207c217fde28064f9dede361b",
    "signer": "0x635a32c502d056dd6e3f4aC1eb15Fb0d90a88171",
    "userId": "1640466"
  }
}