How to mention the team via incoming webhooks in MS Teams - json

Question

I implemented a solution to mention individual team members similar to the one explained in the answer here however this only works for individual users.
I want to apply the same concept but mention the team itself (#team) however I can't find any documentation on it or any examples. At this point I'm not sure if it is supported yet.
This is my current working request:
let data = `{
"type": "message",
"attachments":
[
{
"contentType": "application/vnd.microsoft.card.adaptive",
"content":
{
"type": "AdaptiveCard",
"body": [
{
"type": "TextBlock",
"size": "Medium",
"weight": "Bolder",
"text": "",
"wrap": true,
"style": "heading"
},
{
"type": "ColumnSet",
"columns": [
{
"type": "Column",
"items": [
{
"type": "Image",
"style": "Person",
"url": "` + memberImageURL + `",
"altText": "` + memberName + `",
"size": "Small"
}
],
"width": "auto"
},
{
"type": "Column",
"items": [
{
"type": "TextBlock",
"weight": "Bolder",
"text": "<at>` + memberName + ` UPN</at>",
"wrap": true
}
],
"width": "stretch"
}
]
},
{
"type": "FactSet",
"facts": [
{
"title": "Agile Team",
"value": "` + memberAgileTeam + `"
},
{
"title": "QA Team",
"value": "` + memberTeam + `"
}
]
},
{
"type": "TextBlock",
"text": "` + memberDescription + `",
"wrap": true
}
],
"$schema": "http://adaptivecards.io/schemas/adaptive-card.json",
"version": "1.5",
"msteams": {
"entities": [
{
"type": "mention",
"text": "<at>` + memberName + ` UPN</at>",
"mentioned": {
"id": "` + memberEmail + `",
"name": "` + memberUsername + `"
}
}
]
}
}
}
]
}`;