curl --request POST \
  --url https://api.meetcampfire.com/rev/api/v1/journal-entries \
  --header 'Content-Type: application/json' \
  --data '
{
  "contract": 123,
  "date": "2023-12-25",
  "performance_obligation": 123,
  "invoice": 123,
  "description": "<string>",
  "currency": "<string>",
  "tags": "<unknown>",
  "reversal_of": 123
}
'

import requests

url = "https://api.meetcampfire.com/rev/api/v1/journal-entries"

payload = {
    "contract": 123,
    "date": "2023-12-25",
    "performance_obligation": 123,
    "invoice": 123,
    "description": "<string>",
    "currency": "<string>",
    "tags": "<unknown>",
    "reversal_of": 123
}
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({
    contract: 123,
    date: '2023-12-25',
    performance_obligation: 123,
    invoice: 123,
    description: '<string>',
    currency: '<string>',
    tags: '<unknown>',
    reversal_of: 123
  })
};

fetch('https://api.meetcampfire.com/rev/api/v1/journal-entries', 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/rev/api/v1/journal-entries",
  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([
    'contract' => 123,
    'date' => '2023-12-25',
    'performance_obligation' => 123,
    'invoice' => 123,
    'description' => '<string>',
    'currency' => '<string>',
    'tags' => '<unknown>',
    'reversal_of' => 123
  ]),
  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/rev/api/v1/journal-entries"

	payload := strings.NewReader("{\n  \"contract\": 123,\n  \"date\": \"2023-12-25\",\n  \"performance_obligation\": 123,\n  \"invoice\": 123,\n  \"description\": \"<string>\",\n  \"currency\": \"<string>\",\n  \"tags\": \"<unknown>\",\n  \"reversal_of\": 123\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/rev/api/v1/journal-entries")
  .header("Content-Type", "application/json")
  .body("{\n  \"contract\": 123,\n  \"date\": \"2023-12-25\",\n  \"performance_obligation\": 123,\n  \"invoice\": 123,\n  \"description\": \"<string>\",\n  \"currency\": \"<string>\",\n  \"tags\": \"<unknown>\",\n  \"reversal_of\": 123\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.meetcampfire.com/rev/api/v1/journal-entries")

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  \"contract\": 123,\n  \"date\": \"2023-12-25\",\n  \"performance_obligation\": 123,\n  \"invoice\": 123,\n  \"description\": \"<string>\",\n  \"currency\": \"<string>\",\n  \"tags\": \"<unknown>\",\n  \"reversal_of\": 123\n}"

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

{
  "id": 123,
  "contract": 123,
  "contract_name": "<string>",
  "invoice_number": "",
  "ordinal": 123,
  "date": "2023-12-25",
  "lines": [
    {
      "id": 123,
      "ordinal": 123,
      "account": 123,
      "account_name": "",
      "description": "<string>",
      "currency": "<string>",
      "debit_amount": 0,
      "credit_amount": 0
    }
  ],
  "created_at": "2023-11-07T05:31:56Z",
  "last_modified_at": "2023-11-07T05:31:56Z",
  "performance_obligation": 123,
  "invoice": 123,
  "description": "<string>",
  "currency": "<string>",
  "tags": "<unknown>",
  "reversal_of": 123
}