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Push interval: 10ms 
{
  "id": "clientID5",
  "topic": "PERP_WOO_USDC@bbo",
  "event": "subscribe"
}
Parameters
NameTypeRequiredDescription
idstringYid generate by client
eventstringYsubscribe/unsubscribe
topicstringY{symbol}@bbo
{
  "id": "clientID5",
  "event": "subscribe",
  "success": true,
  "ts": 1609924478533
}

{
  "topic": "PERP_WOO_USDC@bbo",
  "ts": 1614152296945,
  "data": {
    "symbol": "PERP_WOO_USDC",
    "ask": 0.30939,
    "askSize": 4508.53,
    "bid": 0.30776,
    "bidSize": 25246.14
  }
}