Saira Extra Condensed / 400
{
  "copyright": {
    "en": "Copyright 2016 The Saira Project Authors (omnibus.type@gmail.com), with reserved font name \"Saira\"."
  },
  "license": {
    "en": "This Font Software is licensed under the SIL Open Font License, Version 1.1. This license is available with a FAQ at: http://scripts.sil.org/OFL"
  },
  "licenseURL": {
    "en": "http://scripts.sil.org/OFL"
  }
}

Saira Extra Condensed / 600
{
  "copyright": {
    "en": "Copyright 2016 The Saira Project Authors (omnibus.type@gmail.com), with reserved font name \"Saira\"."
  },
  "license": {
    "en": "This Font Software is licensed under the SIL Open Font License, Version 1.1. This license is available with a FAQ at: http://scripts.sil.org/OFL"
  },
  "licenseURL": {
    "en": "http://scripts.sil.org/OFL"
  }
}

Saira Extra Condensed / 700
{
  "copyright": {
    "en": "Copyright 2016 The Saira Project Authors (omnibus.type@gmail.com), with reserved font name \"Saira\"."
  },
  "license": {
    "en": "This Font Software is licensed under the SIL Open Font License, Version 1.1. This license is available with a FAQ at: http://scripts.sil.org/OFL"
  },
  "licenseURL": {
    "en": "http://scripts.sil.org/OFL"
  }
}