I found this info in the dev documentation helpful:
https://docs.electra.one/developers/confformat.html#top-level-objects
To use CC 7, Value 1 from the CTRL port just type:
"midiMessage":"cc7",
"parameterNumber":1
To use a program change 1 from the CTRL port:
"midiMessage":"program",
"parameterNumber":1
See also this thread:
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