curl --request PUT \
  --url https://api.nuvia.ai/v1/hubspot/field-mappings \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "field_mappings": [
    {
      "hubspot_property": "<string>",
      "custom_field_slug": "<string>"
    }
  ]
}
'

{
  "field_mappings": [
    {
      "hubspot_property": "contact.lifecyclestage",
      "custom_field_slug": "estagio_lead"
    }
  ]
}