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"
}