{
  "_comment": "【重要】推送数据不做字段映射，外部系统需直接使用平台标准字段名和枚举值",
  "action": "modify",
  "action_desc": "modify(修改/新增) | delete(删除)",
  "items": [
    {
      "outer_id": "COUPON001",
      "name": "新人专享满减券",
      "description": "新用户注册即可领取",
      "coupon_type": "full_reduction",
      "min_order_amount": "100.00",
      "discount_value": "20.00",
      "tiered_rules": [],
      "validity_type": "relative",
      "valid_start": null,
      "valid_end": null,
      "validity_days": 30,
      "total_quantity": 10000,
      "remaining_quantity": 5000,
      "per_user_limit": 1,
      "status": "active"
    }
  ],
  "field_enums": {
    "coupon_type": "full_reduction(满减券(满X减Y)), percentage_discount(折扣券(X折)), no_threshold(无门槛券(立减Y)), tiered(阶梯券(每满X减Y))",
    "validity_type": "fixed(固定有效期), relative(相对有效期(领取后N天))",
    "status": "active(生效中), paused(暂停), expired(已过期), depleted(已售罄)"
  }
}