Update location refnum via REST

Summary:

Hi

Can anyone provide the json payload for updating existing refnum on address via REST ?

For address line(s) is quite easy and done via address line number, like this:

{ "op": "replace", "path": "addresses/1/addressLine", "value": "NEW STREET LINE" }

but can`t figure out syntax for "refnums".

Tried something like this, but no effect:

{ "op": "replace", "path": "refnums/DOMAIN.REFNUMXID/locationRefnumValue", "value": "new value" }

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