CreateCouponLinkUniqueBody

{
    "title": "Unique Coupon",
    "description": "A special reward with unique coupons",
    "instruction": "Use these coupons to get discounts",
    "link": "https://example.com",
    "type": "CouponLinkUnique",
    "coupons": [
        "coupon1",
        "coupon2"
    ]
}