bpc_updates/updates_custom.json

{
  "addons": {
    "magnolia_limited_permissions@12.34": {
      "updates": [
        { "version": "3.8.7.0",
            "update_link": "https://gitflic.ru/project/magnolia1234/bpc_uploads/blob/raw?file=bypass_paywalls_clean-3.8.7.0-custom.xpi" }
        ]
    }
  }
}