curl --request GET \
  --url https://api.tickflow.org/v1/exchanges/{exchange}/instruments \
  --header 'x-api-key: <api-key>'

{
  "count": 1,
  "data": [
    {
      "code": "<string>",
      "exchange": "<string>",
      "region": "<string>",
      "symbol": "<string>",
      "ext": {
        "type": "cn_equity",
        "float_shares": 123,
        "limit_down": 123,
        "limit_up": 123,
        "listing_date": "<string>",
        "name_en": "<string>",
        "tick_size": 123,
        "total_shares": 123
      },
      "name": "<string>",
      "type": "stock"
    }
  ],
  "exchange": "<string>"
}