{
  "success": true,
  "message": "优惠券领取成功",
  "data": {
    "couponId": "1",
    "claimedAt": "2026-01-23T10:30:00Z",
    "expiresAt": "2026-02-23T23:59:59Z",
    "status": "CLAIMED"
  }
}