https://api.data.payoff.ch/v2/underlyings/EU0009658210?share=1

{
    "isin": "EU0009658210",
    "symbol": "SXXR",
    "valor": "846425",
    "name": "STOXX Europe 600 TR Index",
    "assetClass": "Aktien",
    "tradingExchangeName": null,
    "bid": null,
    "ask": null,
    "bidSize": null,
    "askSize": null,
    "last": null,
    "lastDateTime": null,
    "change": null,
    "ttsId": null
}