curl --request POST \
  --url https://gateway-api-testnet.circle.com/v1/batch/submit \
  --header 'Content-Type: application/json' \
  --data '
{
  "token": "USDC",
  "sendingDomain": 123,
  "recipientDomain": 123,
  "auth": {
    "eip3009Auth": {
      "from": "<string>",
      "to": "<string>",
      "value": "1000000",
      "validAfter": "<string>",
      "validBefore": "<string>",
      "nonce": "<string>",
      "signature": "<string>"
    }
  }
}
'

import requests

url = "https://gateway-api-testnet.circle.com/v1/batch/submit"

payload = {
    "token": "USDC",
    "sendingDomain": 123,
    "recipientDomain": 123,
    "auth": { "eip3009Auth": {
            "from": "<string>",
            "to": "<string>",
            "value": "1000000",
            "validAfter": "<string>",
            "validBefore": "<string>",
            "nonce": "<string>",
            "signature": "<string>"
        } }
}
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({
    token: 'USDC',
    sendingDomain: 123,
    recipientDomain: 123,
    auth: {
      eip3009Auth: {
        from: '<string>',
        to: '<string>',
        value: '1000000',
        validAfter: '<string>',
        validBefore: '<string>',
        nonce: '<string>',
        signature: '<string>'
      }
    }
  })
};

fetch('https://gateway-api-testnet.circle.com/v1/batch/submit', 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://gateway-api-testnet.circle.com/v1/batch/submit",
  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([
    'token' => 'USDC',
    'sendingDomain' => 123,
    'recipientDomain' => 123,
    'auth' => [
        'eip3009Auth' => [
                'from' => '<string>',
                'to' => '<string>',
                'value' => '1000000',
                'validAfter' => '<string>',
                'validBefore' => '<string>',
                'nonce' => '<string>',
                'signature' => '<string>'
        ]
    ]
  ]),
  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://gateway-api-testnet.circle.com/v1/batch/submit"

	payload := strings.NewReader("{\n  \"token\": \"USDC\",\n  \"sendingDomain\": 123,\n  \"recipientDomain\": 123,\n  \"auth\": {\n    \"eip3009Auth\": {\n      \"from\": \"<string>\",\n      \"to\": \"<string>\",\n      \"value\": \"1000000\",\n      \"validAfter\": \"<string>\",\n      \"validBefore\": \"<string>\",\n      \"nonce\": \"<string>\",\n      \"signature\": \"<string>\"\n    }\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://gateway-api-testnet.circle.com/v1/batch/submit")
  .header("Content-Type", "application/json")
  .body("{\n  \"token\": \"USDC\",\n  \"sendingDomain\": 123,\n  \"recipientDomain\": 123,\n  \"auth\": {\n    \"eip3009Auth\": {\n      \"from\": \"<string>\",\n      \"to\": \"<string>\",\n      \"value\": \"1000000\",\n      \"validAfter\": \"<string>\",\n      \"validBefore\": \"<string>\",\n      \"nonce\": \"<string>\",\n      \"signature\": \"<string>\"\n    }\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://gateway-api-testnet.circle.com/v1/batch/submit")

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  \"token\": \"USDC\",\n  \"sendingDomain\": 123,\n  \"recipientDomain\": 123,\n  \"auth\": {\n    \"eip3009Auth\": {\n      \"from\": \"<string>\",\n      \"to\": \"<string>\",\n      \"value\": \"1000000\",\n      \"validAfter\": \"<string>\",\n      \"validBefore\": \"<string>\",\n      \"nonce\": \"<string>\",\n      \"signature\": \"<string>\"\n    }\n  }\n}"

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

{
  "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
}