GET /v1/candles/{underlyingKey}/{specifier}
query since
query envelope
{"position", "candles"}
1[{ "minute": 199989960000, "open": 19500, "high": 20000, "low": 19500, "close": 19750 }]
[{ "minute": 199989960000, "open": 19500, "high": 20000, "low": 19500, "close": 19750 }]