Convert csv to Json

Summary

Options to convert CSV to JSON format

Content

There is a cost adjustment REST service available and customer would like to update mass FIFO costs. The approach we are thinking is to download the cost FIFO layers and provide it to the users. Users can then modify the layer costs and put it in FTP location.
Using orchestration can FTP/File Adapter in Oracle Integration Cloud read the csv file, convert/build a JSON and call a Cost Adjustment REST API ? If not ,  is there a reliable third party tool available  to convert a csv to JSON ?