{
  "manageEntity": {
    "action": "Save",
    "entityId": "82039375",
    "entityType": "Track",
    "nonce": "0x6f164dd8402af83b5e74a0be437bed6ede6f4c8ecf248c96687320ac81bf8b6e",
    "signature": "0xf1471308d227076e4c2780640b8d9a3c13249bc71a1f615b5688e2be558b17bb100de20612085c07fe19d0b7fdea569398b627c4c97ebd1864be02bc6b729da71c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}