config.swaps

{
  "name": "swap_row",
  "base": "",
  "fields": [
    {
      "name": "contract",
      "type": "name"
    },
    {
      "name": "tokens",
      "type": "symbol_code[]"
    },
    {
      "name": "ext_tokens",
      "type": "extended_symbol[]"
    }
  ]
}