You could write a macro to perform the conversion, but it's could be a little complex.
There are commercial CSV to JSON converters, as well as several online ones. Google 'Convert CSV to JSON' for more. It may be possible to automate the commercial tools, otherwise you will have to export the CSV and then use an on-line converter manually to get the JSON.
Logic will get you from a to b. Imagination will take you everywhere. - A Einstein