Unable to summon snow foxes

I tried several times to summon snow fox. But none of commands i found didn't work. Usually it says "syntax error: unexpected "

{" in... **Steps to Reproduce:** I tried some commands like:  /summon minecraft:fox ~ ~ ~ \{Type:snow}

 /summon fox ~ ~ ~{Type:snow}

Observed Results: 

syntax error: unexpected " {" in...

Expected Results: 

the snow fox was supposed to appear

P.S: i found the same ticket MCPE-77673, but it is closed since the creator did not respond.