curl --request POST \
  --url https://rpc-testnet.metalntwx.com/v1/{endpointId}/eth_getBlockByNumber \
  --header 'Content-Type: application/json' \
  --data '
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "eth_getBlockByNumber",
  "params": [
    "latest",
    false
  ]
}
'

import requests

url = "https://rpc-testnet.metalntwx.com/v1/{endpointId}/eth_getBlockByNumber"

payload = {
    "jsonrpc": "2.0",
    "id": 1,
    "method": "eth_getBlockByNumber",
    "params": ["latest", False]
}
headers = {"Content-Type": "application/json"}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {'Content-Type': 'application/json'},
  body: JSON.stringify({
    jsonrpc: '2.0',
    id: 1,
    method: 'eth_getBlockByNumber',
    params: ['latest', false]
  })
};

fetch('https://rpc-testnet.metalntwx.com/v1/{endpointId}/eth_getBlockByNumber', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://rpc-testnet.metalntwx.com/v1/{endpointId}/eth_getBlockByNumber",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'jsonrpc' => '2.0',
    'id' => 1,
    'method' => 'eth_getBlockByNumber',
    'params' => [
        'latest',
        false
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://rpc-testnet.metalntwx.com/v1/{endpointId}/eth_getBlockByNumber"

	payload := strings.NewReader("{\n  \"jsonrpc\": \"2.0\",\n  \"id\": 1,\n  \"method\": \"eth_getBlockByNumber\",\n  \"params\": [\n    \"latest\",\n    false\n  ]\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://rpc-testnet.metalntwx.com/v1/{endpointId}/eth_getBlockByNumber")
  .header("Content-Type", "application/json")
  .body("{\n  \"jsonrpc\": \"2.0\",\n  \"id\": 1,\n  \"method\": \"eth_getBlockByNumber\",\n  \"params\": [\n    \"latest\",\n    false\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://rpc-testnet.metalntwx.com/v1/{endpointId}/eth_getBlockByNumber")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Content-Type"] = 'application/json'
request.body = "{\n  \"jsonrpc\": \"2.0\",\n  \"id\": 1,\n  \"method\": \"eth_getBlockByNumber\",\n  \"params\": [\n    \"latest\",\n    false\n  ]\n}"

response = http.request(request)
puts response.read_body

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "hash": "0xd4ddea8815732fae7af5b907c5d3db50475ed180510e8035789640fb144b1722",
    "number": "0x1cf6b4",
    "timestamp": "0x6a87ac45",
    "timestampMillisPart": "0x9f",
    "proposer": "0x8f59f57db707e439c261f878e88170c6848d8a3493b272c21308d879068e67da19efde55f5bf4c2eb61439232e3cae76",
    "interopMessageRoot": "0x0000000000000000000000000000000000000000000000000000000000000000",
    "ethereumUpdate": "0x",
    "validatorSetRoot": "0x1111111111111111111111111111111111111111111111111111111111111111",
    "nextValidatorSetRoot": "0x1111111111111111111111111111111111111111111111111111111111111111",
    "gasUsed": "0x0",
    "gasLimit": "0x1dcd6500",
    "transactions": []
  }
}