POST https://synergy.net/api/ecommerce/light_coupon_apply

{"order_id":"2882303765589363492","coupon_code":"JustSaidYes20","api_version":"1.1","session_id":"2882303765589364212","context_key":"5d264c36d4d20ef875e4532c86a72c42","seance_id":"2882303765587528396"}