curl --request POST \
  --url https://api.cleartalk.ai/callback/standardCampaign \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "contact_id": "I288bgrq0LlKLbW9tBng",
  "campaign_id": "fc464efb-0725-4d7e-a7f3-3f7d30ec403a",
  "first_name": "<string>",
  "last_name": "<string>",
  "full_name": "<string>",
  "email": "<string>",
  "phone": "<string>",
  "tags": "<string>",
  "country": "<string>",
  "date_created": "<string>",
  "company_name": "<string>",
  "full_address": "<string>",
  "contact_type": "<string>",
  "location": {},
  "workflow": {},
  "triggerData": {},
  "customData": {}
}
'

import requests

url = "https://api.cleartalk.ai/callback/standardCampaign"

payload = {
    "contact_id": "I288bgrq0LlKLbW9tBng",
    "campaign_id": "fc464efb-0725-4d7e-a7f3-3f7d30ec403a",
    "first_name": "<string>",
    "last_name": "<string>",
    "full_name": "<string>",
    "email": "<string>",
    "phone": "<string>",
    "tags": "<string>",
    "country": "<string>",
    "date_created": "<string>",
    "company_name": "<string>",
    "full_address": "<string>",
    "contact_type": "<string>",
    "location": {},
    "workflow": {},
    "triggerData": {},
    "customData": {}
}
headers = {
    "x-api-key": "<api-key>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {'x-api-key': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    contact_id: 'I288bgrq0LlKLbW9tBng',
    campaign_id: 'fc464efb-0725-4d7e-a7f3-3f7d30ec403a',
    first_name: '<string>',
    last_name: '<string>',
    full_name: '<string>',
    email: '<string>',
    phone: '<string>',
    tags: '<string>',
    country: '<string>',
    date_created: '<string>',
    company_name: '<string>',
    full_address: '<string>',
    contact_type: '<string>',
    location: {},
    workflow: {},
    triggerData: {},
    customData: {}
  })
};

fetch('https://api.cleartalk.ai/callback/standardCampaign', 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.cleartalk.ai/callback/standardCampaign",
  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([
    'contact_id' => 'I288bgrq0LlKLbW9tBng',
    'campaign_id' => 'fc464efb-0725-4d7e-a7f3-3f7d30ec403a',
    'first_name' => '<string>',
    'last_name' => '<string>',
    'full_name' => '<string>',
    'email' => '<string>',
    'phone' => '<string>',
    'tags' => '<string>',
    'country' => '<string>',
    'date_created' => '<string>',
    'company_name' => '<string>',
    'full_address' => '<string>',
    'contact_type' => '<string>',
    'location' => [
        
    ],
    'workflow' => [
        
    ],
    'triggerData' => [
        
    ],
    'customData' => [
        
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "x-api-key: <api-key>"
  ],
]);

$response = curl_exec($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.cleartalk.ai/callback/standardCampaign"

	payload := strings.NewReader("{\n  \"contact_id\": \"I288bgrq0LlKLbW9tBng\",\n  \"campaign_id\": \"fc464efb-0725-4d7e-a7f3-3f7d30ec403a\",\n  \"first_name\": \"<string>\",\n  \"last_name\": \"<string>\",\n  \"full_name\": \"<string>\",\n  \"email\": \"<string>\",\n  \"phone\": \"<string>\",\n  \"tags\": \"<string>\",\n  \"country\": \"<string>\",\n  \"date_created\": \"<string>\",\n  \"company_name\": \"<string>\",\n  \"full_address\": \"<string>\",\n  \"contact_type\": \"<string>\",\n  \"location\": {},\n  \"workflow\": {},\n  \"triggerData\": {},\n  \"customData\": {}\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("x-api-key", "<api-key>")
	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.cleartalk.ai/callback/standardCampaign")
  .header("x-api-key", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"contact_id\": \"I288bgrq0LlKLbW9tBng\",\n  \"campaign_id\": \"fc464efb-0725-4d7e-a7f3-3f7d30ec403a\",\n  \"first_name\": \"<string>\",\n  \"last_name\": \"<string>\",\n  \"full_name\": \"<string>\",\n  \"email\": \"<string>\",\n  \"phone\": \"<string>\",\n  \"tags\": \"<string>\",\n  \"country\": \"<string>\",\n  \"date_created\": \"<string>\",\n  \"company_name\": \"<string>\",\n  \"full_address\": \"<string>\",\n  \"contact_type\": \"<string>\",\n  \"location\": {},\n  \"workflow\": {},\n  \"triggerData\": {},\n  \"customData\": {}\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.cleartalk.ai/callback/standardCampaign")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["x-api-key"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"contact_id\": \"I288bgrq0LlKLbW9tBng\",\n  \"campaign_id\": \"fc464efb-0725-4d7e-a7f3-3f7d30ec403a\",\n  \"first_name\": \"<string>\",\n  \"last_name\": \"<string>\",\n  \"full_name\": \"<string>\",\n  \"email\": \"<string>\",\n  \"phone\": \"<string>\",\n  \"tags\": \"<string>\",\n  \"country\": \"<string>\",\n  \"date_created\": \"<string>\",\n  \"company_name\": \"<string>\",\n  \"full_address\": \"<string>\",\n  \"contact_type\": \"<string>\",\n  \"location\": {},\n  \"workflow\": {},\n  \"triggerData\": {},\n  \"customData\": {}\n}"

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