curl --request PUT \
  --url https://api.example.com/v1/customers/{id} \
  --header 'Content-Type: application/json' \
  --data '
{
  "first_name": "<string>",
  "last_name": "<string>",
  "email": "[email protected]",
  "phone": "<string>",
  "address": {
    "street": "<string>",
    "city": "<string>",
    "postal_code": "<string>",
    "country": "<string>"
  },
  "metadata": {}
}
'

{}