curl -X PUT https://api.mycentralino.com/v1/contacts/12345 \
  -H "X-API-KEY: sk_mycentralino_your_api_key" \
  -H "Content-Type: application/json" \
  -d '{
    "name": "Mario Bianchi",
    "notes": "Aggiornato"
  }'

<?php
$id = 12345;
$data = [
    'name' => 'Mario Bianchi',
    'notes' => 'Aggiornato'
];

$ch = curl_init("https://api.mycentralino.com/v1/contacts/{$id}");
curl_setopt_array($ch, [
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_CUSTOMREQUEST => 'PUT',
    CURLOPT_POSTFIELDS => json_encode($data),
    CURLOPT_HTTPHEADER => [
        'X-API-KEY: sk_mycentralino_your_api_key',
        'Content-Type: application/json'
    ]
]);

$response = curl_exec($ch);
curl_close($ch);

print_r(json_decode($response, true));

import requests

headers = {
    'X-API-KEY': 'sk_mycentralino_your_api_key',
    'Content-Type': 'application/json'
}
contact_id = 12345
data = {
    'name': 'Mario Bianchi',
    'notes': 'Aggiornato'
}

response = requests.put(
    f'https://api.mycentralino.com/v1/contacts/{contact_id}',
    headers=headers,
    json=data
)
print(response.json())