Open Sans / 400
{
  "copyright": {
    "en": "Copyright 2020 The Open Sans Project Authors (https://github.com/googlefonts/opensans)"
  },
  "licenseURL": {
    "en": "http://scripts.sil.org/OFL"
  }
}

Open Sans / 600
{
  "copyright": {
    "en": "Copyright 2020 The Open Sans Project Authors (https://github.com/googlefonts/opensans)"
  },
  "licenseURL": {
    "en": "http://scripts.sil.org/OFL"
  }
}

Open Sans / 700
{
  "copyright": {
    "en": "Copyright 2020 The Open Sans Project Authors (https://github.com/googlefonts/opensans)"
  },
  "licenseURL": {
    "en": "http://scripts.sil.org/OFL"
  }
}