{
    "ok": true,
    "data": {
        "message": "Lottery demo is running.",
        "endpoints": {
            "GET  ?op=seed": "Reset & seed mock data",
            "GET  ?op=state": "Global machine state (for reference only)",
            "GET  ?op=user_state&kaiin_id=..&event_id=..&campaign_id=..&spot_id=..": "User draw state",
            "GET  ?op=list_prizes&event_id=..&campaign_id=..&spot_id=..": "Prizes & allow_tokushou",
            "GET  ?op=get_sequence&event_id=..&campaign_id=..&spot_id=..": "Sequence",
            "POST ?op=set_sequence": "{event_id,campaign_id,spot_id,sequence:[{draw_no,prize_id|null}]}",
            "GET  ?op=spins_by_user&kaiin_id=..&event_id=..&campaign_id=..&spot_id=..": "Spin history for a user",
            "POST ?op=spin": "{kaiin_id,event_id,campaign_id,spot_id}"
        }
    }
}