These data points are parsed in the Salv system. This means you can query the information contained in these data points without having to look at JSON data. If the field is not parsed, this is how you query that data point:
select attributes::json->>'relevant_datapoint' from person
where customer_id=$organisationId
and attributes::json->>'relevant_datapoint'='content'
List of indexed data points:
external_id (this is the ID that was sent from your system to Salv)
type
first_name
last_name
company_name
dob
email
phone_number
street_address
city
country