@Jaxon-T, if you use three of these "back ticks" ` before and after your text, it will show it as a code block and keep any backslashes intact.
Like this:
{
"trigger": "sleep",
"command": "d:\\tools\\pstools\\psexec -h C:\\\\Windows\\System32\\psshutdown.exe /d /t 1",
"offCommand": "",
"ground": "background",
"voice": "sleep",
"voiceReply": "",
"allowParams": "false"
}
I tried your command and it didn't work because of UAC. You'll notice I ran it with psexec -h. That worked because it's running as a background command which runs it as Local System which has access to run things "As Administrator" with psexec -h.