JSON body being truncated while logging on loggly

For one of our business requirement, we have a relatively large JSON request body generally ranging from 4-5KB. Whenever we log that request on Loggly the JSON body is truncated to a few character length roughly to 1900 chars and the char length of JSON data which I am trying to log is more than 10000.

I couldn't find the character limit defined for a single event anywhere in the documentation. Is there something that I am missing here?