If this is the response:
"body": {
"@odata.context": "https://graph.microsoft.com/v1.0/$metadata#sites/$entity",
"createdDateTime": "2020-04-09T18:43:38.65Z",
"description": "",
"id": "This is the response",
"lastModifiedDateTime": "2023-12-10T01:49:35Z",
}
To get the 'id', you would do it like this.
Set(Response, HttpCall...);
Set(r_id, Text(Response.id));