mutation UpdateGuidelineDesignSettingsMainFontFamily {
  updateGuidelineDesignSettingsMainFontFamily(
    input: {
      guidelineId: "…"
      mainFontFamily: {
        name: "…"
        provider: "…"
      }
    }
  ) {
    __typename
    mainFontFamily {
      name
      provider
    }
  }
}