curl --request POST \
  --url https://api.rigaly.com/api/v1/customers/{userId}/identifiers \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "value": "shopify-8842",
  "label": "Shopify customer ID"
}
'

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({value: 'shopify-8842', label: 'Shopify customer ID'})
};

fetch('https://api.rigaly.com/api/v1/customers/{userId}/identifiers', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://api.rigaly.com/api/v1/customers/{userId}/identifiers"

payload = {
    "value": "shopify-8842",
    "label": "Shopify customer ID"
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.rigaly.com/api/v1/customers/{userId}/identifiers",
  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([
    'value' => 'shopify-8842',
    'label' => 'Shopify customer ID'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

{
  "success": true,
  "message": "<string>",
  "data": {
    "identifier": {
      "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "value": "shopify-8842",
      "label": "Shopify customer ID",
      "created_at": "2023-11-07T05:31:56Z"
    }
  }
}

{
  "success": false,
  "error": {
    "message": "Provide exactly one of \"user_id\" or \"identifier\""
  }
}