{
  "manageEntity": {
    "action": "Save",
    "entityId": "91703082",
    "entityType": "Track",
    "nonce": "0xf5abb01f34e572c0aec9f76281ce072470f5e570d90a75684edde17ed0047293",
    "signature": "0x99bfd6282700a8a33aba3837ab9b5a60a138df211bcaf1ac0a4a730bad177a4659563832db55e39bd39d77c3c67533e11e85e3aa0b7ac8b726c4953c966b1c011b",
    "signer": "0xdB791822A11f5aDc830669bdADa8121a4558D7A3",
    "userId": "347139808"
  }
}