curl --request POST \
  --url https://cosmos-rest.publicnode.com/cosmos/tx/v1beta1/txs \
  --header 'Content-Type: application/json' \
  --data '
{
  "tx_bytes": "aSDinaTvuI8gbWludGxpZnk=",
  "mode": "BROADCAST_MODE_UNSPECIFIED"
}
'

import requests

url = "https://cosmos-rest.publicnode.com/cosmos/tx/v1beta1/txs"

payload = {
    "tx_bytes": "aSDinaTvuI8gbWludGxpZnk=",
    "mode": "BROADCAST_MODE_UNSPECIFIED"
}
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({tx_bytes: 'aSDinaTvuI8gbWludGxpZnk=', mode: 'BROADCAST_MODE_UNSPECIFIED'})
};

fetch('https://cosmos-rest.publicnode.com/cosmos/tx/v1beta1/txs', 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://cosmos-rest.publicnode.com/cosmos/tx/v1beta1/txs",
  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([
    'tx_bytes' => 'aSDinaTvuI8gbWludGxpZnk=',
    'mode' => 'BROADCAST_MODE_UNSPECIFIED'
  ]),
  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://cosmos-rest.publicnode.com/cosmos/tx/v1beta1/txs"

	payload := strings.NewReader("{\n  \"tx_bytes\": \"aSDinaTvuI8gbWludGxpZnk=\",\n  \"mode\": \"BROADCAST_MODE_UNSPECIFIED\"\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://cosmos-rest.publicnode.com/cosmos/tx/v1beta1/txs")
  .header("Content-Type", "application/json")
  .body("{\n  \"tx_bytes\": \"aSDinaTvuI8gbWludGxpZnk=\",\n  \"mode\": \"BROADCAST_MODE_UNSPECIFIED\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://cosmos-rest.publicnode.com/cosmos/tx/v1beta1/txs")

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  \"tx_bytes\": \"aSDinaTvuI8gbWludGxpZnk=\",\n  \"mode\": \"BROADCAST_MODE_UNSPECIFIED\"\n}"

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

{
  "tx_response": {
    "height": "<string>",
    "txhash": "<string>",
    "codespace": "<string>",
    "code": 123,
    "data": "<string>",
    "raw_log": "<string>",
    "logs": [
      {
        "msg_index": 123,
        "log": "<string>",
        "events": [
          {
            "type": "<string>",
            "attributes": [
              {
                "key": "<string>",
                "value": "<string>"
              }
            ]
          }
        ]
      }
    ],
    "info": "<string>",
    "gas_wanted": "<string>",
    "gas_used": "<string>",
    "tx": {
      "@type": "<string>"
    },
    "timestamp": "<string>",
    "events": [
      {
        "type": "<string>",
        "attributes": [
          {
            "key": "<string>",
            "value": "<string>",
            "index": true
          }
        ]
      }
    ]
  }
}

{
  "code": 123,
  "message": "<string>",
  "details": [
    {
      "@type": "<string>"
    }
  ]
}