const url = 'https://api.thanks.io/api/v2/recipients/{recipientId}';
const options = {
  method: 'PUT',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: '{"mailing_list_id":1,"name":"Tobias Example","company":"www.thanks.io","address":"123 Main Street","address2":"Apartment 1","city":"Any Town","province":"KS","postal_code":"12345","country":"US","dob":"1981-04-23","email":"[email protected]","phone":"+1 (555) 123-4567","custom1":"Unique Info","custom2":"For example a product code or customer ID","custom3":"Any Extra Info","custom4":"Any Extra Info"}'
};

try {
  const response = await fetch(url, options);
  const data = await response.json();
  console.log(data);
} catch (error) {
  console.error(error);
}

{
  "id": 18113288,
  "mailing_list_id": 1,
  "name": "Tobias Example",
  "company": "thanks.io",
  "address": "12345 Main Street",
  "address2": "Apartment 1",
  "city": "Any Town",
  "province": "NY",
  "postal_code": "12345",
  "country": "US",
  "dob": "1981-04-23",
  "email": "[email protected]",
  "phone": "845-988-6485",
  "custom1": "Unique Info",
  "custom2": "For example a product code or customer ID",
  "custom3": "",
  "custom4": "",
  "created_at": "2025-06-27T14:57:11.000000Z",
  "updated_at": "2025-06-27T14:57:11.000000Z",
  "mailing_list": {
    "id": 1,
    "user_id": 2,
    "sub_account_id": null,
    "type": "manual",
    "description": "Sphere Contacts Mailing List",
    "qrcode_url": null,
    "total_recipients": 1,
    "processed": true,
    "is_suppression_list": false,
    "total_scans": 1,
    "unique_scans": 1,
    "last_scan": "2025-07-13T13:57:11.000000Z",
    "total_sends": 2,
    "last_send": "2025-07-06T13:57:11.000000Z",
    "created_at": "6 years ago",
    "updated_at": "2025-06-27T14:57:11.000000Z"
  }
}