curl --request GET \
  --url https://mycluster.domino.tech/tags/{tagId}

{
  "children": "<array>",
  "createdAt": "<string>",
  "createdBy": {
    "userID": "<string>",
    "username": "<string>"
  },
  "description": "<string>",
  "entityCount": {
    "app": 123,
    "netappVolume": 123,
    "project": 123,
    "total": 123
  },
  "fullPath": [
    "<string>"
  ],
  "id": "<string>",
  "label": "<string>",
  "namespaceId": "<string>",
  "namespaceLabel": "<string>",
  "parentId": "<string>",
  "updatedAt": "<string>",
  "updatedBy": {
    "userID": "<string>",
    "username": "<string>"
  }
}