How to use mitmweb to rewrite/modify response body(json)?

[passcodex]

I want to modify "/unifiedauthapi/" response body,

"id":72 > "id":75

The command line of mitmweb is
`/Users/user/mitmproxy/mitmweb --web-host 0.0.0.0
--modify-body "|~m GET & ~u /unifiedauthapi/|"id":72|"id":75"

but it's not working.

How should I use mitmweb to make it work?

[mhils]

This looks correct. Could it be that there is whitespace between "id": and 72?

[passcodex]

This looks correct. Could it be that there is whitespace between "id": and 72?
Thanks!
I need to add back slash \ in front of special string.
"|~m GET & ~u /unifiedauthapi/|\"id\":\\s*\\S*72|\"id\":75"