curl --request POST \
  --url https://vicem.com/modules/addons/DomainsReseller/api/index.php/order/domains/transfer \
  --header 'Content-Type: application/x-www-form-urlencoded' \
  --header 'token: <token>' \
  --header 'username: <username>' \
  --data domain=example.com \
  --data regperiod=1 \
  --data 'nameservers={
  "ns1": "ns1.example.com",
  "ns2": "ns2.example.com",
  "ns3": "<string>",
  "ns4": "<string>",
  "ns5": "<string>"
}' \
  --data 'contacts={
  "Registrant": {},
  "Admin": {},
  "Tech": {},
  "Billing": {}
}' \
  --data 'eppcode=<string>' \
  --data 'addons={
  "dnsmanagement": false,
  "emailforwarding": false,
  "idprotection": false
}' \
  --data 'domainfields=<string>' \
  --data 'idnLanguage=<string>' \
  --data 'originalvars={}'

import requests

url = "https://vicem.com/modules/addons/DomainsReseller/api/index.php/order/domains/transfer"

payload = {
    "domain": "example.com",
    "regperiod": "1",
    "nameservers": "{
  \"ns1\": \"ns1.example.com\",
  \"ns2\": \"ns2.example.com\",
  \"ns3\": \"<string>\",
  \"ns4\": \"<string>\",
  \"ns5\": \"<string>\"
}",
    "contacts": "{
  \"Registrant\": {},
  \"Admin\": {},
  \"Tech\": {},
  \"Billing\": {}
}",
    "eppcode": "<string>",
    "addons": "{
  \"dnsmanagement\": false,
  \"emailforwarding\": false,
  \"idprotection\": false
}",
    "domainfields": "<string>",
    "idnLanguage": "<string>",
    "originalvars": "{}"
}
headers = {
    "username": "<username>",
    "token": "<token>",
    "Content-Type": "application/x-www-form-urlencoded"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {
    username: '<username>',
    token: '<token>',
    'Content-Type': 'application/x-www-form-urlencoded'
  },
  body: new URLSearchParams({
    domain: 'example.com',
    regperiod: '1',
    nameservers: '{\n  "ns1": "ns1.example.com",\n  "ns2": "ns2.example.com",\n  "ns3": "<string>",\n  "ns4": "<string>",\n  "ns5": "<string>"\n}',
    contacts: '{\n  "Registrant": {},\n  "Admin": {},\n  "Tech": {},\n  "Billing": {}\n}',
    eppcode: '<string>',
    addons: '{\n  "dnsmanagement": false,\n  "emailforwarding": false,\n  "idprotection": false\n}',
    domainfields: '<string>',
    idnLanguage: '<string>',
    originalvars: '{}'
  })
};

fetch('https://vicem.com/modules/addons/DomainsReseller/api/index.php/order/domains/transfer', 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://vicem.com/modules/addons/DomainsReseller/api/index.php/order/domains/transfer",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => "domain=example.com&regperiod=1&nameservers=%7B%0A%20%20%22ns1%22%3A%20%22ns1.example.com%22%2C%0A%20%20%22ns2%22%3A%20%22ns2.example.com%22%2C%0A%20%20%22ns3%22%3A%20%22%3Cstring%3E%22%2C%0A%20%20%22ns4%22%3A%20%22%3Cstring%3E%22%2C%0A%20%20%22ns5%22%3A%20%22%3Cstring%3E%22%0A%7D&contacts=%7B%0A%20%20%22Registrant%22%3A%20%7B%7D%2C%0A%20%20%22Admin%22%3A%20%7B%7D%2C%0A%20%20%22Tech%22%3A%20%7B%7D%2C%0A%20%20%22Billing%22%3A%20%7B%7D%0A%7D&eppcode=%3Cstring%3E&addons=%7B%0A%20%20%22dnsmanagement%22%3A%20false%2C%0A%20%20%22emailforwarding%22%3A%20false%2C%0A%20%20%22idprotection%22%3A%20false%0A%7D&domainfields=%3Cstring%3E&idnLanguage=%3Cstring%3E&originalvars=%7B%7D",
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/x-www-form-urlencoded",
    "token: <token>",
    "username: <username>"
  ],
]);

$response = curl_exec($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://vicem.com/modules/addons/DomainsReseller/api/index.php/order/domains/transfer"

	payload := strings.NewReader("domain=example.com&regperiod=1&nameservers=%7B%0A%20%20%22ns1%22%3A%20%22ns1.example.com%22%2C%0A%20%20%22ns2%22%3A%20%22ns2.example.com%22%2C%0A%20%20%22ns3%22%3A%20%22%3Cstring%3E%22%2C%0A%20%20%22ns4%22%3A%20%22%3Cstring%3E%22%2C%0A%20%20%22ns5%22%3A%20%22%3Cstring%3E%22%0A%7D&contacts=%7B%0A%20%20%22Registrant%22%3A%20%7B%7D%2C%0A%20%20%22Admin%22%3A%20%7B%7D%2C%0A%20%20%22Tech%22%3A%20%7B%7D%2C%0A%20%20%22Billing%22%3A%20%7B%7D%0A%7D&eppcode=%3Cstring%3E&addons=%7B%0A%20%20%22dnsmanagement%22%3A%20false%2C%0A%20%20%22emailforwarding%22%3A%20false%2C%0A%20%20%22idprotection%22%3A%20false%0A%7D&domainfields=%3Cstring%3E&idnLanguage=%3Cstring%3E&originalvars=%7B%7D")

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

	req.Header.Add("username", "<username>")
	req.Header.Add("token", "<token>")
	req.Header.Add("Content-Type", "application/x-www-form-urlencoded")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://vicem.com/modules/addons/DomainsReseller/api/index.php/order/domains/transfer")
  .header("username", "<username>")
  .header("token", "<token>")
  .header("Content-Type", "application/x-www-form-urlencoded")
  .body("domain=example.com&regperiod=1&nameservers=%7B%0A%20%20%22ns1%22%3A%20%22ns1.example.com%22%2C%0A%20%20%22ns2%22%3A%20%22ns2.example.com%22%2C%0A%20%20%22ns3%22%3A%20%22%3Cstring%3E%22%2C%0A%20%20%22ns4%22%3A%20%22%3Cstring%3E%22%2C%0A%20%20%22ns5%22%3A%20%22%3Cstring%3E%22%0A%7D&contacts=%7B%0A%20%20%22Registrant%22%3A%20%7B%7D%2C%0A%20%20%22Admin%22%3A%20%7B%7D%2C%0A%20%20%22Tech%22%3A%20%7B%7D%2C%0A%20%20%22Billing%22%3A%20%7B%7D%0A%7D&eppcode=%3Cstring%3E&addons=%7B%0A%20%20%22dnsmanagement%22%3A%20false%2C%0A%20%20%22emailforwarding%22%3A%20false%2C%0A%20%20%22idprotection%22%3A%20false%0A%7D&domainfields=%3Cstring%3E&idnLanguage=%3Cstring%3E&originalvars=%7B%7D")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://vicem.com/modules/addons/DomainsReseller/api/index.php/order/domains/transfer")

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

request = Net::HTTP::Post.new(url)
request["username"] = '<username>'
request["token"] = '<token>'
request["Content-Type"] = 'application/x-www-form-urlencoded'
request.body = "domain=example.com&regperiod=1&nameservers=%7B%0A%20%20%22ns1%22%3A%20%22ns1.example.com%22%2C%0A%20%20%22ns2%22%3A%20%22ns2.example.com%22%2C%0A%20%20%22ns3%22%3A%20%22%3Cstring%3E%22%2C%0A%20%20%22ns4%22%3A%20%22%3Cstring%3E%22%2C%0A%20%20%22ns5%22%3A%20%22%3Cstring%3E%22%0A%7D&contacts=%7B%0A%20%20%22Registrant%22%3A%20%7B%7D%2C%0A%20%20%22Admin%22%3A%20%7B%7D%2C%0A%20%20%22Tech%22%3A%20%7B%7D%2C%0A%20%20%22Billing%22%3A%20%7B%7D%0A%7D&eppcode=%3Cstring%3E&addons=%7B%0A%20%20%22dnsmanagement%22%3A%20false%2C%0A%20%20%22emailforwarding%22%3A%20false%2C%0A%20%20%22idprotection%22%3A%20false%0A%7D&domainfields=%3Cstring%3E&idnLanguage=%3Cstring%3E&originalvars=%7B%7D"

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

"success"

{
  "error": "Invalid API Token provided"
}

{
  "error": "Invalid API Token provided"
}

{
  "error": "Invalid API Token provided"
}

{
  "error": "Invalid API Token provided"
}