curl --request POST \
  --url https://api.example.com/api/activity/activities.create \
  --header 'Content-Type: application/json' \
  --data '
{
  "resource_id": "872815618512410358",
  "task_id": "872815618512410358",
  "billable": true,
  "type": "duration",
  "id": "872815618512410358",
  "date": "2019-11-11",
  "duration": "PT1H30M20S",
  "remark": "<string>",
  "start": "2019-11-11T12:34:56",
  "end": "2019-11-11T12:34:56"
}
'

import requests

url = "https://api.example.com/api/activity/activities.create"

payload = {
    "resource_id": "872815618512410358",
    "task_id": "872815618512410358",
    "billable": True,
    "type": "duration",
    "id": "872815618512410358",
    "date": "2019-11-11",
    "duration": "PT1H30M20S",
    "remark": "<string>",
    "start": "2019-11-11T12:34:56",
    "end": "2019-11-11T12:34:56"
}
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({
    resource_id: '872815618512410358',
    task_id: '872815618512410358',
    billable: true,
    type: 'duration',
    id: '872815618512410358',
    date: '2019-11-11',
    duration: 'PT1H30M20S',
    remark: '<string>',
    start: '2019-11-11T12:34:56',
    end: '2019-11-11T12:34:56'
  })
};

fetch('https://api.example.com/api/activity/activities.create', 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.example.com/api/activity/activities.create",
  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([
    'resource_id' => '872815618512410358',
    'task_id' => '872815618512410358',
    'billable' => true,
    'type' => 'duration',
    'id' => '872815618512410358',
    'date' => '2019-11-11',
    'duration' => 'PT1H30M20S',
    'remark' => '<string>',
    'start' => '2019-11-11T12:34:56',
    'end' => '2019-11-11T12:34:56'
  ]),
  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.example.com/api/activity/activities.create"

	payload := strings.NewReader("{\n  \"resource_id\": \"872815618512410358\",\n  \"task_id\": \"872815618512410358\",\n  \"billable\": true,\n  \"type\": \"duration\",\n  \"id\": \"872815618512410358\",\n  \"date\": \"2019-11-11\",\n  \"duration\": \"PT1H30M20S\",\n  \"remark\": \"<string>\",\n  \"start\": \"2019-11-11T12:34:56\",\n  \"end\": \"2019-11-11T12:34:56\"\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.example.com/api/activity/activities.create")
  .header("Content-Type", "application/json")
  .body("{\n  \"resource_id\": \"872815618512410358\",\n  \"task_id\": \"872815618512410358\",\n  \"billable\": true,\n  \"type\": \"duration\",\n  \"id\": \"872815618512410358\",\n  \"date\": \"2019-11-11\",\n  \"duration\": \"PT1H30M20S\",\n  \"remark\": \"<string>\",\n  \"start\": \"2019-11-11T12:34:56\",\n  \"end\": \"2019-11-11T12:34:56\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.example.com/api/activity/activities.create")

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  \"resource_id\": \"872815618512410358\",\n  \"task_id\": \"872815618512410358\",\n  \"billable\": true,\n  \"type\": \"duration\",\n  \"id\": \"872815618512410358\",\n  \"date\": \"2019-11-11\",\n  \"duration\": \"PT1H30M20S\",\n  \"remark\": \"<string>\",\n  \"start\": \"2019-11-11T12:34:56\",\n  \"end\": \"2019-11-11T12:34:56\"\n}"

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

{
  "id": "872815618512410358"
}