如何在JSON自适应卡中使用If语句，让团队在提交的选择响应中@提及用户？

{
  "$schema": "http://adaptivecards.io/schemas/adaptive-card.json",
  "type": "AdaptiveCard",
  "version": "1.4",
  "body": [
    {
      "type": "TextBlock",
      "text": "请选择一个选项："
    },
    {
      "type": "Input.ChoiceSet",
      "id": "choice",
      "choices": [
        {
          "title": "选项1",
          "value": "1"
        },
        {
          "title": "选项2",
          "value": "2"
        },
        {
          "title": "选项3",
          "value": "3"
        }
      ]
    }
  ],
  "actions": [
    {
      "type": "Action.Submit",
      "title": "提交",
      "data": {
        "choice": "${choice.value}"
      }
    }
  ],
  "$schema": "http://adaptivecards.io/schemas/adaptive-card.json",
  "type": "AdaptiveCard",
  "version": "1.4",
  "body": [
    {
      "type": "TextBlock",
      "text": "请选择一个选项："
    },
    {
      "type": "Input.ChoiceSet",
      "id": "choice",
      "choices": [
        {
          "title": "选项1",
          "value": "1"
        },
        {
          "title": "选项2",
          "value": "2"
        },
        {
          "title": "选项3",
          "value": "3"
        }
      ]
    }
  ],
  "actions": [
    {
      "type": "Action.Submit",
      "title": "提交",
      "data": {
        "choice": "${choice.value}"
      }
    }
  ],
  "msteams": {
    "entities": [
      {
        "type": "mention",
        "text": "<at>userId</at>"
      }
    ]
  }
}