Syne / 400
{
  "copyright": {
    "en": "Copyright 2019 The Syne Project Authors (https://gitlab.com/bonjour-monde/fonderie/syne-typeface)"
  },
  "licenseURL": {
    "en": "https://scripts.sil.org/OFL"
  }
}

Syne / 600
{
  "copyright": {
    "en": "Copyright 2019 The Syne Project Authors (https://gitlab.com/bonjour-monde/fonderie/syne-typeface)"
  },
  "licenseURL": {
    "en": "https://scripts.sil.org/OFL"
  }
}

Syne / 700
{
  "copyright": {
    "en": "Copyright 2019 The Syne Project Authors (https://gitlab.com/bonjour-monde/fonderie/syne-typeface)"
  },
  "licenseURL": {
    "en": "https://scripts.sil.org/OFL"
  }
}