{
  "manageEntity": {
    "action": "Download",
    "entityId": "686493600",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"city\":\"San Jose\",\"region\":\"California\",\"country\":\"United States\"}}",
    "nonce": "0xc2f08ff2dbd8260a28b09403855c5676927e81e18ca8ccd5313133a35c6786d9",
    "signature": "0x45ced4e8d2deaa12e21126f9255fa13b0674f39b0618a77e6f0f7ed43b473b0347a5b4f92bb575526cd5c8b76c057555e17869103c8ff63c245fe28fa7b4a1421c",
    "signer": "0x6CDd0c0FFBA25fF3A1e67aFb0149c464d2220E65",
    "userId": "675469944"
  }
}