{
"source": "candle",
"symbol": "<market_symbol>"
"interval": "<time_interval>"
}
{
"s": <symbol>,
"i": <time interval>,
"o": <open price>,
"c": <current closing price>,
"h": <current high price>,
"l": <current low price>,
"v": <volume>,
"n": <number of trades>,
"t": <start time in milliseconds>,
"T": <close time in milliseconds>,
}