[
  CHAN_ID, 
  'hos'
  [
    [
      ID, 
      GID,
      CID,
      SYMBOL, 
      MTS_CREATE, 
      MTS_UPDATE, 
      AMOUNT, 
      AMOUNT_ORIG, 
      TYPE,
      TYPE_PREV,
      _PLACEHOLDER,
      _PLACEHOLDER,
      FLAGS,
      STATUS,
      _PLACEHOLDER,
      _PLACEHOLDER,
      PRICE,
      PRICE_AVG,
      PRICE_TRAILING,
      PRICE_AUX_LIMIT,
      _PLACEHOLDER,
      _PLACEHOLDER,
      _PLACEHOLDER,
      NOTIFY, 
      HIDDEN, 
      PLACED_ID,
      ...
    ], 
    ...
  ]
]

Stream Fields

Term	Type	Description
ID	int	Order ID
GID	int	Group ID
CID	int	Client Order ID
SYMBOL	string	Pair (tBTCUSD, …)
MTS_CREATE	int	Millisecond timestamp of creation
MTS_UPDATE	int	Millisecond timestamp of update
AMOUNT	float	Positive means buy, negative means sell.
AMOUNT_ORIG	float	Original amount
TYPE	string	The type of the order: LIMIT, MARKET, STOP, STOP LIMIT, TRAILING STOP, FOK, IOC For exchange orders: EXCHANGE MARKET, EXCHANGE LIMIT, EXCHANGE STOP, EXCHANGE STOP LIMIT, EXCHANGE TRAILING STOP, EXCHANGE FOK, EXCHANGE IOC.
TYPE_PREV	string	Previous order type
FLAGS	int	See https://docs.bitfinex.com/v2/docs/flag-values.
ORDER_STATUS	string	Order Status: ACTIVE, EXECUTED, PARTIALLY FILLED, CANCELED, RSN_DUST (amount is less than 0.00000001), RSN_PAUSE (trading is paused / paused due to AMPL rebase event)
PRICE	float	Price
PRICE_AVG	float	Average price
PRICE_TRAILING	float	The trailing price
PRICE_AUX_LIMIT	float	Auxiliary Limit price (for STOP LIMIT)
NOTIFY	int	1 if Notify flag is active, 0 if not
HIDDEN	int	1 if Hidden, 0 if not hidden
PLACED_ID	int	If another order caused this order to be placed (OCO) this will be that other order's ID