{
  "manageEntity": {
    "action": "Save",
    "entityId": "128164",
    "entityType": "Track",
    "nonce": "0xdd7423071d10da46d26df55e077fdc368b880022219ee3d8260008cd8b90dda9",
    "signature": "0x147b722c153e8104e27cd4abfce0a130533f63d937a31d361e6e093a337b71ef287e3775c260812ff66aa41549bb8ae5b855cb901dd18ff1732f23c10daa68a61c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}