A substitution would work nicely.
:%s/}/\0\r/g
Replace } with the whole match \0 and a new line character \r.
or
:%s/}/&\r/g
Where & also is an alternative for the whole match, looks a bit funny though in my opinion. Vim golfers like it because it saves them a keystroke 🙂
\0 or & in the replacement part of the substitution acts as a special character. During the substitution the whole string that was matched replaces the \0 or the & character in the substitution.
We can demonstrate this with a more complex search and replace –
Which witch is which?
Apply a substitution –
:s/[wW][ih][ti]ch/The \0/g
Gives –
The Which The witch is The which?