curl --request POST \
  --url https://api.meetcampfire.com/rr/api/v1/modify-subscription-schedule \
  --header 'Content-Type: application/json' \
  --data '
{
  "start_date": "2023-12-25",
  "total_value": 0,
  "end_date": "2023-12-25",
  "mrr": 0,
  "use_daily_accounting": false,
  "use_catchup": false,
  "catchup_date": "2023-12-25",
  "modified_subscription": 123,
  "does_modify_contract_end_date": false,
  "apply_prospectively": false,
  "first_invoice_date": "2023-12-25"
}
'

import requests

url = "https://api.meetcampfire.com/rr/api/v1/modify-subscription-schedule"

payload = {
    "start_date": "2023-12-25",
    "total_value": 0,
    "end_date": "2023-12-25",
    "mrr": 0,
    "use_daily_accounting": False,
    "use_catchup": False,
    "catchup_date": "2023-12-25",
    "modified_subscription": 123,
    "does_modify_contract_end_date": False,
    "apply_prospectively": False,
    "first_invoice_date": "2023-12-25"
}
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({
    start_date: '2023-12-25',
    total_value: 0,
    end_date: '2023-12-25',
    mrr: 0,
    use_daily_accounting: false,
    use_catchup: false,
    catchup_date: '2023-12-25',
    modified_subscription: 123,
    does_modify_contract_end_date: false,
    apply_prospectively: false,
    first_invoice_date: '2023-12-25'
  })
};

fetch('https://api.meetcampfire.com/rr/api/v1/modify-subscription-schedule', 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.meetcampfire.com/rr/api/v1/modify-subscription-schedule",
  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([
    'start_date' => '2023-12-25',
    'total_value' => 0,
    'end_date' => '2023-12-25',
    'mrr' => 0,
    'use_daily_accounting' => false,
    'use_catchup' => false,
    'catchup_date' => '2023-12-25',
    'modified_subscription' => 123,
    'does_modify_contract_end_date' => false,
    'apply_prospectively' => false,
    'first_invoice_date' => '2023-12-25'
  ]),
  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.meetcampfire.com/rr/api/v1/modify-subscription-schedule"

	payload := strings.NewReader("{\n  \"start_date\": \"2023-12-25\",\n  \"total_value\": 0,\n  \"end_date\": \"2023-12-25\",\n  \"mrr\": 0,\n  \"use_daily_accounting\": false,\n  \"use_catchup\": false,\n  \"catchup_date\": \"2023-12-25\",\n  \"modified_subscription\": 123,\n  \"does_modify_contract_end_date\": false,\n  \"apply_prospectively\": false,\n  \"first_invoice_date\": \"2023-12-25\"\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.meetcampfire.com/rr/api/v1/modify-subscription-schedule")
  .header("Content-Type", "application/json")
  .body("{\n  \"start_date\": \"2023-12-25\",\n  \"total_value\": 0,\n  \"end_date\": \"2023-12-25\",\n  \"mrr\": 0,\n  \"use_daily_accounting\": false,\n  \"use_catchup\": false,\n  \"catchup_date\": \"2023-12-25\",\n  \"modified_subscription\": 123,\n  \"does_modify_contract_end_date\": false,\n  \"apply_prospectively\": false,\n  \"first_invoice_date\": \"2023-12-25\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.meetcampfire.com/rr/api/v1/modify-subscription-schedule")

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  \"start_date\": \"2023-12-25\",\n  \"total_value\": 0,\n  \"end_date\": \"2023-12-25\",\n  \"mrr\": 0,\n  \"use_daily_accounting\": false,\n  \"use_catchup\": false,\n  \"catchup_date\": \"2023-12-25\",\n  \"modified_subscription\": 123,\n  \"does_modify_contract_end_date\": false,\n  \"apply_prospectively\": false,\n  \"first_invoice_date\": \"2023-12-25\"\n}"

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

[
  {
    "start_date": "2023-12-25",
    "end_date": "2023-12-25",
    "total_value": 0,
    "id": 123,
    "scheduled_invoice_date": "2023-12-25",
    "original_value": 0,
    "original_mrr": 0,
    "mrr": 0,
    "original_quantity": 0,
    "quantity": 0,
    "original_rate": 0,
    "rate": 0,
    "billed_amount": 0,
    "use_daily_accounting": false,
    "is_contract_amendment": false
  }
]