curl -X PATCH https://api.clinikapi.com/v1/fhir/Patient/pt_abc123 \
-H "x-api-key: clk_live_abc123" \
-H "Content-Type: application/json-patch+json" \
-d '[
{ "op": "replace", "path": "/name/0/family", "value": "Johnson" },
{ "op": "add", "path": "/telecom/-", "value": { "system": "phone", "value": "+1-555-0200" } }
]'