This is an example call for web3_clientVersion.
web3_clientVersion
{ "jsonrpc": "2.0", "id": "1", "method": "web3_clientVersion", "params": null }
{ "jsonrpc": "2.0", "id": "1", "result": "Geth/v1.14.9-unstable-effcd38a-20240909/linux-amd64/go1.23.1" }