{
  "manageEntity": {
    "action": "Save",
    "entityId": "2044486957",
    "entityType": "Track",
    "nonce": "0xa8a96da427cf821ed3f99326082ff519e9af1359cf9997bd9fc84c5bbedd9c7d",
    "signature": "0xe59c0e69394f7524f777de3f93a0e9ec70574e6a9463d72575cd6e6259a32a617b8157865954053d4e062737b620a25327ccbe2d69a1ee2e640cc53db1172a691c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}