curl --request GET \
  --url https://api.tradewatch.io/currencies/{symbol}/ohlc \
  --header 'api-key: <api-key>'

{
  "symbol": "<string>",
  "resolution": "<string>",
  "items": [
    {
      "time": 123,
      "open_ask": 123,
      "high_ask": 123,
      "low_ask": 123,
      "close_ask": 123,
      "open_bid": 123,
      "high_bid": 123,
      "low_bid": 123,
      "close_bid": 123
    }
  ]
}