{
  "manageEntity": {
    "action": "Save",
    "entityId": "1038992130",
    "entityType": "Track",
    "nonce": "0xa07e1cfc1ca07eedc45dfbc8ccdfa0766cea0676fa061abb7544450cac55cf55",
    "signature": "0xbb14f021911dfcd61b2a43f00787011233e6d61e94044b76bb4bd573a09be20926ef87e9723cdd13294a1a0b903eaa04f30e81e4cfc25f7cc86910982805350d1c",
    "signer": "0x5c51216FbbB9B7A562f11267f91f72A7be1e8DE3",
    "userId": "105826"
  }
}