ActivityDefinition on the FHIR specification website.

This resource allows for the definition of some activity to be performed, independent of a particular patient, practitioner, or other performance context.

The body should be a list of valid JSON patches for ActivityDefinition. For example, to update a Slot status to busy, this would be the body:

[
  {
    op: 'replace',
    path: '/status',
    value: 'busy',
  },
],