{
  "manageEntity": {
    "action": "Save",
    "entityId": "1754085315",
    "entityType": "Track",
    "nonce": "0xb413a57575fb289f955c3b1a64d7f4b6ae8c0483500ad15e626dd39948cc1b83",
    "signature": "0x970aa2a534ec20a3c383cf929b5aa2044848d7895b8bfed97eb80bb3286e50f751ea1f2076de6ddf1c99919f6d08ff2d3cb4e522237a4453df54bd5f96b7bb691c",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}