stack-chan

{
    "service": {
        "uuid": "450f932b-bb09-4fe3-9856-6f66ddcc43ec",
        "characteristics": {
            "stk": {
                "uuid": "a2abc192-26aa-45d9-aa17-42db27585c57",
                "maxBytes": 512,
                "type": "string",
                "permissions": "read,write",
                "properties": "read,write"
            }
        }
    }
}