curl --request POST \
  --url https://api.nuvia.ai/v1/rdstation/sync \
  --header 'Authorization: Bearer <token>'

{
  "properties": [
    {
      "group": "Contato",
      "items": [
        {
          "value": "contacts.email",
          "label": "E-mail",
          "type": "string",
          "readOnly": false
        }
      ]
    }
  ],
  "field_mappings": [
    {
      "rdstation_property": "contacts.email",
      "custom_field_slug": "email_contato"
    }
  ],
  "removed_mappings": [
    {
      "rdstation_property": "contacts.email",
      "custom_field_slug": "email_contato"
    }
  ],
  "synced_at": "2025-01-19T10:30:00.000Z"
}