dragonexchng

{
  "name": "exchange_rate",
  "base": "",
  "fields": [
    {
      "name": "token_code",
      "type": "symbol_code"
    },
    {
      "name": "base_rate",
      "type": "uint64"
    },
    {
      "name": "buy_value",
      "type": "uint64"
    },
    {
      "name": "sell_value",
      "type": "uint64"
    }
  ]
}