I have something like this in linux using a novation launchcontrol, it's quite straightforward using aseqdump, say I use the buttons to switch desktops, I have this launched as part of my session and always in background. While developing this I just printed $line to see what aseqdump sent to figure out the regexes

    while IFS=' ' read -r line; do
      if [[ "$line" == *"client"*"Launch Control"\* ]]; then
        device=$(echo "$line" | cut -d' ' -f2)
      fi
    done < <(aconnect -i)

    aseqdump -p ${device::-1} | while IFS=' ' read -r line; do
        if [[ "$line" == *"Note on"* ]]; then
            note=$(echo "$line" | grep -o "note [0-9]*" | cut -d' ' -f2)
            if [ "$note" == "9" ]; then
                wmctrl -s 8
            fi
        elif [[ "$line" == *"Control change"*"127" ]]; then
            note=$(echo "$line" | grep -o "controller [0-9]*" | cut -d' ' -f2)
            if [ "$note" == "114" ]; then
                # some macro
            fi
        fi
    done