{
  "manageEntity": {
    "action": "Save",
    "entityId": "110408708",
    "entityType": "Track",
    "nonce": "0x162ee0329d2a774d8e4019eb41d32948f12dacbd64b52a57a099672f9a567c5d",
    "signature": "0x476655a663144f3d8a26492368296fd5789d8b751a7c25dee4bb50a40ec8a95c47db08e5b282dfab10b542148c4ebfe774c66d1a16269986980ae540768724731b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}