{
  "manageEntity": {
    "action": "Download",
    "entityId": "1416946406",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"city\":\"Santa Clara\",\"region\":\"California\",\"country\":\"United States\"}}",
    "nonce": "0x48c26d8980e171d117485041bbe41ad9ac4e34511f5560041a4ca8dd74b5a92a",
    "signature": "0x16b06788d5b75f41aec384c1e4dc7fe1e3ffcd0ac068bc50f80b32314a6d45156fdad9a1113463fb458848b766ebc81ac68800b742c50206bef43317f630aa6c1c",
    "signer": "0xc0728e13f8e15b705a88778C329ce2fDa4bAdfb5",
    "userId": "128010"
  }
}