octave-jsonlab binary package in Ubuntu Mantic s390x

 JSONLab is a free and open-source JSON/UBJSON/MessagePack encoder and
 decoder written in the native MATLAB language. It can be used to convert a
 MATLAB data structure (array, struct, cell, struct array, cell array, and
 objects) into JSON/UBJSON/MessagePack formatted strings and files, or to
 parse a JSON/UBJSON/MessagePack file into MATLAB data structure. JSONLab
 supports both MATLAB and GNU Octave.
 .
 JSONLab is not just a parser and writer of JSON/UBJSON data files, but one
 that systematically converts complex scientific data structures into
 human-readable and universally supported JSON forms using the standardized
 JData data annotations.
 .
 This package provides support for Octave.

Source package