{
  "manageEntity": {
    "action": "Save",
    "entityId": "1176844010",
    "entityType": "Track",
    "nonce": "0xcce5409c19d3786340a220d1742ded94f263c63cdfb27854653b3efd6f2f81ca",
    "signature": "0xd4aa10a919abbadf7fc645c60658b9eef8b7d94a4c591a12ed4a62411893e42367bed1af3f84521c33bbddde2ce664a62334ee7d814b9c0b86a3e368db202b3b1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}