https://api.data.payoff.ch/v2/underlyings?counters=true&keyword=CHF+SARON+3m

{
    "meta": {
        "totalRecords": 1,
        "page": 1,
        "numRecords": 1
    },
    "counters": {
        "exchanges": [
            {
                "ref": "XQMH",
                "name": "SIX Structured Products | XQMH",
                "num": "1"
            }
        ]
    },
    "list": [
        {
            "id": 13166307,
            "isin": "CH0049613786",
            "symbol": "SAR3M",
            "name": "CHF SARON 3m",
            "assetClass": "Geldmarkt",
            "categories": {
                "11": "5",
                "12": "0",
                "13": "111",
                "14": "0",
                "20": "0"
            }
        }
    ]
}