API purge single file

Hello,

I’ve got a nextjs site where I woudl like to purge cache for single URL, i.e:

mydomaincom
mydomaincom/contact

etc

But sending purge requests like:

curl -X POST ‘api/purge_cache’ -H ‘Authorization: Bearer ‘token’’ -H ‘Content-Type: application/json’ -d ‘{“files”:[“mydomaincom/contact”’]}

doesn’t clear the cache and content on site isn’t refreshed - anyway I’ve got an response:

{“success”:true,“errors”:,“messages”:,“result”:

so the cache should be purged.

Only purge all do the job, but I don’t want to clear all cache for a single URL.
We have an Pro plan on CF if that changes anything. Do I have to include all headers into request, i.e:

x-nextjs-cache: STALE
x-powered-by: Next.js
x-powered-by: PleskLin

?
Trying to do this few days and have no idea what I’m doing wrong.