{
  "manageEntity": {
    "action": "Save",
    "entityId": "88010",
    "entityType": "Track",
    "nonce": "0x3b82d4c698fdc7f50fc4b92cc00050f1ab7efc4a373be470832f7804abc97304",
    "signature": "0xbfe3f7d94be03fffe5af8e3df7de5fad8ad04e383eb14ff7eb7b292aa0458c4b7411e981f037d0a95963bcdf288ffef955fe5f912077c5446914f354469c23561c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}