{
  "manageEntity": {
    "action": "Save",
    "entityId": "1255723726",
    "entityType": "Track",
    "nonce": "0xac826c498df31c87b95955d5734cb2642978260f58155e456d3834a4622b8a30",
    "signature": "0xfeb67b0d4a8ff46ae5e41174ef8f121c3a9f3e833839d0c74628a03502132dd84d023618f365bc147098c60918cd026241ceff4bbb54f032160fad289cc430371c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}