// Request
curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"klay_syncing","params":[],"id":1}' http://klaytn.blockpi.network/v1/rpc/your-api-key
// Result
{
"jsonrpc": "2.0",
"id":1,
"result": {
"currentBlock":"0x3e31e",
"highestBlock":"0x827eef",
"knownStates":"0x0",
"pulledStates":"0x0",
"startingBlock":"0x0"