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ChannelScopePayload
perps_tickersall instrumentsTicker updates: index/mark/last/mid price, open interest, funding rate, next funding
perps_statisticsall instrumentsRolling 24h stats per instrument
perps_bbo:<instrument>one instrumentBest bid/offer changes
perps_book:<instrument>one instrumentFull snapshot on subscribe, then book updates (top 20 levels)
perps_trades:<instrument>one instrumentExecutions as they print
perps_klines:<instrument>:<interval>one instrumentClosed candles; streamed intervals are 1m and 1h

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Example events

perps_tickers: 
{
  "channel": "perps_tickers",
  "data": {
    "instrument_id": 6,
    "symbol": "BTC-USD",
    "index_price": "62022",
    "mark_price": "62010",
    "last_price": "61989",
    "mid_price": "62010",
    "open_interest": "67.44542",
    "funding_rate": "0.0000125",
    "next_funding": 1783573200000,
    "timestamp": 1783571023159
  }
}
perps_trades:<instrument>: 
{
  "channel": "perps_trades",
  "data": {
    "instrument_id": 6,
    "symbol": "BTC-USD",
    "data": [
      {
        "trade_id": 7504966405671651,
        "instrument_id": 6,
        "symbol": "BTC-USD",
        "side": "short",
        "price": "62009",
        "quantity": "0.00842",
        "timestamp": 1783571031288
      }
    ]
  }
}
perps_book:<instrument> (snapshot on subscribe, then updates): 
{
  "channel": "perps_book",
  "data": {
    "instrument_id": 6,
    "symbol": "BTC-USD",
    "bids": [["62009", "0.03999"]],
    "asks": [["62010", "0.05098"]],
    "timestamp": 1783571023159
  }
}
perps_klines:<instrument>:<interval>: 
{
  "channel": "perps_klines",
  "data": {
    "instrument_id": 6,
    "symbol": "BTC-USD",
    "interval": "1m",
    "candle": [1783571040000, "62010", "62015", "62001", "62009", "1.2043", 18],
    "timestamp": 1783571100000
  }
}
Candles are [open_time, open, high, low, close, volume, trade_count] — the same layout as REST klines.