curl --request POST \
  --url https://api.smartbills.io/v1/businesses/{businessId}/customers/{customerId}/balance-transactions/batch \
  --header 'Content-Type: application/json' \
  --data '
[
  {
    "customerId": 123,
    "amount": {
      "amount": 123,
      "currency": "<string>",
      "conversion": {
        "originalAmount": 123,
        "originalCurrency": "<string>",
        "exchangeRate": 123,
        "convertedAt": "2023-11-07T05:31:56Z"
      }
    },
    "description": "<string>",
    "date": "2023-11-07T05:31:56Z"
  }
]
'

import requests

url = "https://api.smartbills.io/v1/businesses/{businessId}/customers/{customerId}/balance-transactions/batch"

payload = [
    {
        "customerId": 123,
        "amount": {
            "amount": 123,
            "currency": "<string>",
            "conversion": {
                "originalAmount": 123,
                "originalCurrency": "<string>",
                "exchangeRate": 123,
                "convertedAt": "2023-11-07T05:31:56Z"
            }
        },
        "description": "<string>",
        "date": "2023-11-07T05:31:56Z"
    }
]
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([
    {
      customerId: 123,
      amount: {
        amount: 123,
        currency: '<string>',
        conversion: {
          originalAmount: 123,
          originalCurrency: '<string>',
          exchangeRate: 123,
          convertedAt: '2023-11-07T05:31:56Z'
        }
      },
      description: '<string>',
      date: '2023-11-07T05:31:56Z'
    }
  ])
};

fetch('https://api.smartbills.io/v1/businesses/{businessId}/customers/{customerId}/balance-transactions/batch', 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://api.smartbills.io/v1/businesses/{businessId}/customers/{customerId}/balance-transactions/batch",
  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([
    [
        'customerId' => 123,
        'amount' => [
                'amount' => 123,
                'currency' => '<string>',
                'conversion' => [
                                'originalAmount' => 123,
                                'originalCurrency' => '<string>',
                                'exchangeRate' => 123,
                                'convertedAt' => '2023-11-07T05:31:56Z'
                ]
        ],
        'description' => '<string>',
        'date' => '2023-11-07T05:31:56Z'
    ]
  ]),
  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://api.smartbills.io/v1/businesses/{businessId}/customers/{customerId}/balance-transactions/batch"

	payload := strings.NewReader("[\n  {\n    \"customerId\": 123,\n    \"amount\": {\n      \"amount\": 123,\n      \"currency\": \"<string>\",\n      \"conversion\": {\n        \"originalAmount\": 123,\n        \"originalCurrency\": \"<string>\",\n        \"exchangeRate\": 123,\n        \"convertedAt\": \"2023-11-07T05:31:56Z\"\n      }\n    },\n    \"description\": \"<string>\",\n    \"date\": \"2023-11-07T05:31:56Z\"\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://api.smartbills.io/v1/businesses/{businessId}/customers/{customerId}/balance-transactions/batch")
  .header("Content-Type", "application/json")
  .body("[\n  {\n    \"customerId\": 123,\n    \"amount\": {\n      \"amount\": 123,\n      \"currency\": \"<string>\",\n      \"conversion\": {\n        \"originalAmount\": 123,\n        \"originalCurrency\": \"<string>\",\n        \"exchangeRate\": 123,\n        \"convertedAt\": \"2023-11-07T05:31:56Z\"\n      }\n    },\n    \"description\": \"<string>\",\n    \"date\": \"2023-11-07T05:31:56Z\"\n  }\n]")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.smartbills.io/v1/businesses/{businessId}/customers/{customerId}/balance-transactions/batch")

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  {\n    \"customerId\": 123,\n    \"amount\": {\n      \"amount\": 123,\n      \"currency\": \"<string>\",\n      \"conversion\": {\n        \"originalAmount\": 123,\n        \"originalCurrency\": \"<string>\",\n        \"exchangeRate\": 123,\n        \"convertedAt\": \"2023-11-07T05:31:56Z\"\n      }\n    },\n    \"description\": \"<string>\",\n    \"date\": \"2023-11-07T05:31:56Z\"\n  }\n]"

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