cameri on Nostr: websocat -n wss://yourrelay <<<'["REQ", "query", {"authors:["pubkey1", "pubkey2", ...

websocat -n wss://yourrelay <<<'["REQ", "query", {"authors:["pubkey1", "pubkey2", "pubkey3"]}]'

Pubkeys must be in lowercase hex not bech32. Use https://damus.io/key to convert.

https://github.com/nostr-protocol/nips/blob/master/01.md