How to process an extremely large JSON request (1 GB+) to API with NodeJS and Express

I have written an API that accepts JSON post requests (list of objects) at an endpoint, interfaces with a KDB/Q database and returns a JSON response. It works very well until the requests start to get very large and have many rows of data (the database is still processing results extremely quickly). The server seems to run out of memory/crash when accepting such large POST requests of 100k+ objects in the list. Is there a way to accept a POST of this amount of data and return it in chunks?