Fireman Cloud Messaging with Postman：添加授权后立即出现连接错误

Question

我正在尝试使用Firebase云消息传递使用Postman到网址https://fcm.googleapis.com/fcm/send进行推送通知。

这是我使用的数据：

method: POST,
headers: {
  "Content-Type": application/json,
  "Authorization": key=<my_api_key>
},
body: {
    "to": "<some_device_key>",
    "notifcation": {
        "title": "Hi",
        "body": "test",
        "subtitle": "Jo"
    }
}

使用“原始”设置添加正文。问题是我立即得到了答复：

但是当我在标题中省略Authorization键时，我得到：

<HTML>
    <HEAD>
        <TITLE>The request was missing an Authentication Key (FCM Token). Please, refer to section &quot;Authentication&quot; of the FCM documentation, at https://firebase.google.com/docs/cloud-messaging/server.</TITLE>
    </HEAD>
    <BODY BGCOLOR="#FFFFFF" TEXT="#000000">
        <H1>The request was missing an Authentication Key (FCM Token). Please, refer to section &quot;Authentication&quot; of the FCM documentation, at https://firebase.google.com/docs/cloud-messaging/server.</H1>
        <H2>Error 401</H2>
    </BODY>
</HTML>

因此，以某种方式将Authorization添加到标题会使请求变得混乱。可能是什么原因？文档的给定部分没有“身份验证”部分。