{
  "namespace": "com.kubetrade.schema.trade",
  "type": "record",
  "name": "TradeKey",
  "fields": [
    {
      "name": "exchange",
      "type": "com.kubetrade.schema.common.Exchange"
    },
    {
      "name": "key",
      "type": "string"
    }
  ]
}