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WSS
userAddr
type:string
required

User wallet address (Aptos address format, e.g. 0x123...)

OrderUpdateMessage
type:object

Perp and spot order update for a specific user. The nested order carries asset_type. Spot order rows use time_in_force and leave perp-only fields such as client_order_id, reduce-only, and TP/SL empty, false, or null.