Auth Identity inside next js server actions

[native ruin]

I am trying to access user identity inside a mutation by getUserIdentity
When I am running it inside a server action I am getting it as null but whenever I am running it using use mutation hook that is from the client side no errors.
Is it dependent anyhow with the client side jwts? Cause no mentioning of such info on docs

[vapid bobcat]

https://docs.convex.dev/client/react/nextjs/server-rendering#server-side-authentication