curl --request PUT \
  --url https://my.server.express/api/v1/client/settings \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "firstName": "<string>",
  "lastName": "<string>",
  "addressLine1": "<string>",
  "addressLine2": "<string>",
  "city": "<string>",
  "postcode": "<string>",
  "phoneNumber": "<string>",
  "companyName": "<string>",
  "country": "<string>",
  "region": "<string>",
  "vatNumber": "<string>"
}
'

const options = {
  method: 'PUT',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    firstName: '<string>',
    lastName: '<string>',
    addressLine1: '<string>',
    addressLine2: '<string>',
    city: '<string>',
    postcode: '<string>',
    phoneNumber: '<string>',
    companyName: '<string>',
    country: '<string>',
    region: '<string>',
    vatNumber: '<string>'
  })
};

fetch('https://my.server.express/api/v1/client/settings', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://my.server.express/api/v1/client/settings"

payload = {
    "firstName": "<string>",
    "lastName": "<string>",
    "addressLine1": "<string>",
    "addressLine2": "<string>",
    "city": "<string>",
    "postcode": "<string>",
    "phoneNumber": "<string>",
    "companyName": "<string>",
    "country": "<string>",
    "region": "<string>",
    "vatNumber": "<string>"
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

{
  "success": true,
  "data": {
    "message": "Settings updated"
  }
}

{
  "success": false,
  "error": "<string>"
}

{
  "success": false,
  "error": "<string>"
}

{
  "success": false,
  "error": "<string>"
}

{
  "success": false,
  "error": "<string>"
}