curl --request POST \
  --url https://api.pocketflows.com/businesses/{id}/custom_domains \
  --header 'Authorization: Basic <encoded-value>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "domain": "<string>"
}
'

{
  "id": "<string>",
  "business": "<string>",
  "domain": "<string>",
  "dns_records": [
    {
      "name": "<string>",
      "type": "<string>",
      "value": "<string>"
    }
  ],
  "created_at": "<string>",
  "validated": true,
  "setup_completed_at": "<string>",
  "setup_type": "<string>"
}