Welcome to the forum. Where are you from?
The last snow plow I bought was from Eagle. It was a 60 inch and was about $425.00 The mounting plate was the same as a Yamaha Rhino. Your Massimo 500 UTV is made by Hisun and a lot of the plow dealers will be more familiar with this name. You can search on this forum by entering snow plow in the box up near the top right hand corner. There are several good previous discussions about different plows.
If you have any other questions about your 500 this is a good place to ask. The sponsored dealers here can get most all the parts you might need and usually have an answer for any problems you run into.
Post a picture of your new ride and keep us up to date on how it goes for you.