NFX: ok SRX: 15.1X49-D140
<script>IyEvYmluL3NoCi91c3Ivc2Jpbi9jbGkgLWMgInJlcXVlc3Qgc3lzdGVtIGNvbmZpZ3VyYXRpb24gcmVzY3VlIHNhdmUi</script>
</device>
The script is base64 encoded, decoded it looks like this
#!/bin/sh
/usr/sbin/cli -c "request system configuration rescue save"