curl --request GET \
  --url http://localhost/api/component-groups/{componentGroup}

{
  "data": {
    "id": "<string>",
    "type": "componentGroups",
    "attributes": {
      "id": 123,
      "name": "<string>",
      "order": 123,
      "created": {
        "human": "<string>",
        "string": "<string>"
      },
      "updated": {
        "human": "<string>",
        "string": "<string>"
      }
    },
    "relationships": {
      "components": {
        "data": [
          {
            "type": "components",
            "id": "<string>"
          }
        ]
      }
    }
  }
}