Discussion on: Use adaptive cards with mention in Microsoft Teams

{
    "type": "message",
    "attachments": [
      {
        "contentType": "application/vnd.microsoft.card.adaptive",
        "content": {
          "type": "AdaptiveCard",
          "$schema": "https://adaptivecards.io/schemas/adaptive-card.json",
          "version": "1.4",
          "body": [
            {
              "type": "ColumnSet",
              "columns": [
                {
                  "type": "Column",
                  "width": 2,
                  "items": [
                    {
                      "type": "TextBlock",
                      "text": "<at>John Doe</at> you should really see this.. ",
                      "wrap": true
                    }
                  ]
                }
              ]
            }
          ],
          "msteams": {
            "entities": [
              {
                "type": "mention",
                "text": "<at>John Doe</at>",
                "mentioned": {
                  "id": "john@example.com",
                  "name": "John Doe"
                }
              }
            ]
          }
        }
      }
    ]
  }