激励视频请求示例：

POST /api/receive-rewarded-ecpm
Content-Type: application/json

{
  "appid": "wx1234567890abcdef",
  "phoneid": "8612345678901234",
  "game_id": 1,
  "video_type": "rewarded",
  "ecpm_value": 2.5,
  "impressions": 15,
  "clicks": 3,
  "conversions": 2,
  "video_duration": 15,
  "completed_watch": true,
  "timestamp": "2023-06-01 12:00:00"
}