If all you want is to use an echo routine, you don’t need to use the old Universal device type handler. Instead, the community FAQ for using echo routines with smartthings includes the code for a device which is both a switch and a sensor at the same time. That allows you to turn it on and off using either smartthings or Echo but also have an Echo routine (not a smartthings routine) think it is a sensor and trigger off of it that way.
FAQ: Can I trigger an Echo Action without Speaking to It?
All of that said, we still need the original poster to indicate the model of the fan. The options which are available will depend on that.
And they won’t be able to use any device type handler for the fan if there’s no way to connect the fan to smartthings.
However, they may be able to use either IFTTT or an echo routine or a device like the bond remote as a “man in the middle.“ But it all depends on the model number. 