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I want a configured FIX client instance to expose subscribe to data( kargs) - None and…

I want a configured FIX client instance to expose subscribe to data( kargs) - None and…: a task in MiMo-V2.6-RL-harbor-code: MiMo-V2.6-RL Code (Harbor) (Harbor dataset). When I call unsubscribe to data( {'55': 'EUR/USD'}) , it should send the same kind of MarketDataRequest to the quote session…

The task

When I call `unsubscribe_to_data(**{'55': 'EUR/USD'})`, it should send the same kind of MarketDataRequest to the quote session, but with subscription type disable previous snapshot plus updates (`263=2`). If I omit `55`, the symbol should default to `EUR/USD`; if I provide `264`, `267`, or `265`, those FIX tag…

Part of FineEnvs/MiMo-V2.6-RL-harbor-code.