Shipped: 2023.04.09
The translation service (https://xlate.azurewebsites.net/) now contains menu commands to export the json files. The export options can be used to export the Current page or All pages.

The exported content is a JSON file with the following hierarchy.
Product
Pages
Sections
Phrases
The root node is a Product. A Product may contain multiple Pages (e.g. settings, general etc.). A page may contain multiple Sections (Import Settings, Tooling Settings etc.). Section contains Phrases to translate. The Phrase has Code, Text and Value properties. Where Code is an internal ID of the phrase used to locate a translation data in the database. The Text is the reference text to be translated and Value is the translated text.

Please share the JSON format with the translation partner and let me know if we need to update the export schema. They should return the translated data in the same format with just the phrase value update.