curl --request POST \
  --url 'https://api.musixmatch.com/ws/1.1/work.validity.post?apikey=' \
  --header 'Content-Type: application/json' \
  --data '
"{\n    \"data\": {\n        \"identifier\": \"00001100196005\",  // Your Musical Work’s unique identifier used in the work ingestion phase\n        \"validity_end\": \"2024-01-01\"    // End of deal, in YYYY-MM-DD format.\n    }\n}"
'

import requests

url = "https://api.musixmatch.com/ws/1.1/work.validity.post?apikey="

payload = "{
    \"data\": {
        \"identifier\": \"00001100196005\",  // Your Musical Work’s unique identifier used in the work ingestion phase
        \"validity_end\": \"2024-01-01\"    // End of deal, in YYYY-MM-DD format.
    }
}"
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('{\n    "data": {\n        "identifier": "00001100196005",  // Your Musical Work’s unique identifier used in the work ingestion phase\n        "validity_end": "2024-01-01"    // End of deal, in YYYY-MM-DD format.\n    }\n}')
};

fetch('https://api.musixmatch.com/ws/1.1/work.validity.post?apikey=', 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.musixmatch.com/ws/1.1/work.validity.post?apikey=",
  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('{
    "data": {
        "identifier": "00001100196005",  // Your Musical Work’s unique identifier used in the work ingestion phase
        "validity_end": "2024-01-01"    // End of deal, in YYYY-MM-DD format.
    }
}'),
  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.musixmatch.com/ws/1.1/work.validity.post?apikey="

	payload := strings.NewReader("\"{\\n    \\\"data\\\": {\\n        \\\"identifier\\\": \\\"00001100196005\\\",  // Your Musical Work’s unique identifier used in the work ingestion phase\\n        \\\"validity_end\\\": \\\"2024-01-01\\\"    // End of deal, in YYYY-MM-DD format.\\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.musixmatch.com/ws/1.1/work.validity.post?apikey=")
  .header("Content-Type", "application/json")
  .body("\"{\\n    \\\"data\\\": {\\n        \\\"identifier\\\": \\\"00001100196005\\\",  // Your Musical Work’s unique identifier used in the work ingestion phase\\n        \\\"validity_end\\\": \\\"2024-01-01\\\"    // End of deal, in YYYY-MM-DD format.\\n    }\\n}\"")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.musixmatch.com/ws/1.1/work.validity.post?apikey=")

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    \\\"data\\\": {\\n        \\\"identifier\\\": \\\"00001100196005\\\",  // Your Musical Work’s unique identifier used in the work ingestion phase\\n        \\\"validity_end\\\": \\\"2024-01-01\\\"    // End of deal, in YYYY-MM-DD format.\\n    }\\n}\""

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