http://fhir.patientsknowbest.com/operation/date-of-last-data-point
https://www.hl7.org/fhir/STU3/operationdefinition.html
https://www.hl7.org/fhir/STU3/operations.html
name
"date-of-last-data-point"
...
In addition to the OAuth 2.0 access token, the X-Org-Public-Id HTTP header must be provided in the request to specify the organisation that the system is calling on behalf of. The parameter will be the UUID of the PKB organisation.
...