"subscription_id": "sub_abc123", "customer": "acme_corp", "issued": "2026-05-24T00:00:00Z", "valid_from": "2026-05-24T00:00:00Z", "valid_until": "2027-05-24T23:59:59Z", "plan": "premium_annual", "features": ["advanced_analytics", "multi_user", "api_access"], "max_seats": 50, "license_server": "https://lic.kts.com/verify"
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