curl --request POST \
  --url https://api.messaging.phonovation.com/whatsapp/1/senders/{sender}/public-key \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: multipart/form-data' \
  --data-binary $'curl --request POST \'https://{base_url}/whatsapp/1/senders/{sender}/public-key\' \\\n--header \'Authorization: {authorization}\' \\\n--form \'file="@public_key.pem"\''

import requests

url = "https://api.messaging.phonovation.com/whatsapp/1/senders/{sender}/public-key"

headers = {
    "Authorization": "<api-key>",
    "Content-Type": "multipart/form-data"
}

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

print(response.text)

using RestSharp;


var options = new RestClientOptions("https://api.messaging.phonovation.com/whatsapp/1/senders/{sender}/public-key");
var client = new RestClient(options);
var request = new RestRequest("");
request.AlwaysMultipartFormData = true;
request.AddHeader("Authorization", "<api-key>");
var response = await client.PostAsync(request);

Console.WriteLine("{0}", response.Content);

HttpResponse<String> response = Unirest.post("https://api.messaging.phonovation.com/whatsapp/1/senders/{sender}/public-key")
  .header("Authorization", "<api-key>")
  .header("Content-Type", "multipart/form-data")
  .body("curl --request POST 'https://{base_url}/whatsapp/1/senders/{sender}/public-key' \\\n--header 'Authorization: {authorization}' \\\n--form 'file=\"@public_key.pem\"'")
  .asString();

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.messaging.phonovation.com/whatsapp/1/senders/{sender}/public-key",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => "curl --request POST 'https://{base_url}/whatsapp/1/senders/{sender}/public-key' \\\n--header 'Authorization: {authorization}' \\\n--form 'file=\"@public_key.pem\"'",
  CURLOPT_HTTPHEADER => [
    "Authorization: <api-key>",
    "Content-Type: multipart/form-data"
  ],
]);

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

curl_close($curl);

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

const options = {
  method: 'POST',
  headers: {Authorization: '<api-key>', 'Content-Type': 'multipart/form-data'}
};

fetch('https://api.messaging.phonovation.com/whatsapp/1/senders/{sender}/public-key', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

{
  "errorCode": "E400",
  "description": "Request cannot be processed.",
  "action": "Check the syntax, violations and adjust the request.",
  "violations": [
    {
      "property": "property.path",
      "violation": "Violation message."
    }
  ],
  "resources": []
}

{
  "errorCode": "E401",
  "description": "The request lacks valid authentication credentials for the requested resource.",
  "action": "Check the resources and adjust authentication credentials.",
  "violations": [],
  "resources": [
    {
      "name": "API Authentication",
      "url": "https://www.phonovation.com/docs/essentials/api-authentication"
    }
  ]
}

{
  "errorCode": "E403",
  "description": "Insufficient permissions to access the requested resource.",
  "action": "Repeat the request with new or different credentials.",
  "violations": [],
  "resources": [
    {
      "name": "API Scopes",
      "url": "https://www.phonovation.com/docs/essentials/api-essentials/api-authorization#api-scopes"
    }
  ]
}

{
  "errorCode": "<string>",
  "description": "<string>",
  "action": "<string>",
  "violations": [
    {
      "property": "<string>",
      "violation": "<string>"
    }
  ],
  "resources": [
    {
      "name": "<string>",
      "url": "<string>"
    }
  ]
}

{
  "errorCode": "E429",
  "description": "Too many requests sent.",
  "action": "Check request rate limit specified in the API endpoint documentation resource.",
  "violations": [],
  "resources": [
    {
      "name": "Throttling handling errors",
      "url": "https://www.phonovation.com/docs/essentials/integration-best-practices#throttling-handling-errors"
    }
  ]
}

{
  "errorCode": "E500",
  "description": "Something went wrong.",
  "action": "Contact the support.",
  "violations": [],
  "resources": []
}