https://api.data.payoff.ch/v2/underlyings?counters=true&keyword=Cardano

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    "counters": {
        "exchanges": [
            {
                "ref": "XQMH",
                "name": "SIX Structured Products | XQMH",
                "num": "1"
            }
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    "list": [
        {
            "id": 29440,
            "isin": "XTTADAUSDEXS",
            "symbol": "ADAUSD",
            "name": "Cardano",
            "assetClass": "Digital Assets",
            "categories": {
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