取得https的網址後，需要再次回到Line Developer後台設定WebHook的URL：
相關的設定在Messaging settings這個區塊裡面

在填入網址後，必須按下Verify驗證網址的可用性
按下驗證後，LINE將會傳送像這樣的訊息來Call你的Webhook：

{
  "destination": null,
  "events": [
    {
      "replyToken": "00000000000000000000000000000000",
      "type": "message",
      "timestamp": 1560397869724,
      "source": {
        "type": "user",
        "userId": "Udeadbeefdeadbeefdeadbeefdeadbeef",
        "groupId": null
      },
      "message": {
        "id": "100001",
        "type": "text",
        "text": "Hello, world",
        "contentProvider": null,
        "duration": null,
        "fileName": null,
        "fileSize": null,
        "title": null,
        "address": null,
        "latitude": null,
        "longitude": null,
        "packageId": null,
        "stickerId": null
      },
      "joined": null,
      "left": null,
      "postback": null,
      "beacon": null,
      "link": null,
      "things": null
    },
    {
      "replyToken": "ffffffffffffffffffffffffffffffff",
      "type": "message",
      "timestamp": 1560397869724,
      "source": {
        "type": "user",
        "userId": "Udeadbeefdeadbeefdeadbeefdeadbeef",
        "groupId": null
      },
      "message": {
        "id": "100002",
        "type": "sticker",
        "text": null,
        "contentProvider": null,
        "duration": null,
        "fileName": null,
        "fileSize": null,
        "title": null,
        "address": null,
        "latitude": null,
        "longitude": null,
        "packageId": "1",
        "stickerId": "1"
      },
      "joined": null,
      "left": null,
      "postback": null,
      "beacon": null,
      "link": null,
      "things": null
    }
  ]
}

• userId 全部都是UdeadbeefdeadbeefdeadbeefdeadbeefXD
  驗證通過後，會顯示Success
  如果一直無法驗證通過，可以用上面的JSON使用POSTMAN之類的工具看一下可能是出現了什麼問題
• Use webhooks 也要記得打開