# Send subscription control messages **PUBLISH /market-data** Accepts one of the following messages. ## Messages ### Subscribe Request Client request to subscribe to market(s) #### Payload - **type** (string) - **markets** (array[string]) - **force_snapshot** (boolean) If true, forces fresh snapshot even if already subscribed ### Unsubscribe Request Client request to unsubscribe from market(s) #### Payload - **type** (string) - **markets** (array[string])