SubscriptionTopic on the FHIR specification website.

Describes a stream of resource state changes identified by trigger criteria and annotated with labels useful to filter projections from this topic.

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

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