Request body sample: {"jsonrpc":"2.0","method":"eth_getUncleByBlockNumberAndIndex","params":["0x29c", "0x0"],"id":1}
OK
const response = await fetch('eth_getUncleByBlockNumberAndIndex', { method: 'POST', headers: { "Content-Type": "application/json" }, body: JSON.stringify({}), }); const data = await response.json();
{ "jsonrpc": "text", "result": "text" }