Merge thing command at /policyId

{
  "topic": "com.acme/xdk_53/things/twin/commands/merge",
  "headers": {
    "content-type": "application/merge-patch+json"
  },
  "path": "/policyId",
  "value": "com.acme:the_policy_id"
}

Merge thing command response at /policyId

{
  "topic": "com.acme/xdk_53/things/twin/commands/merge",
  "headers": {},
  "path": "/policyId",
  "status": 204
}

Thing merged event at /policyId

{
  "topic": "com.acme/xdk_53/things/twin/events/merged",
  "headers": {
    "content-type": "application/merge-patch+json"
  },
  "path": "/policyId",
  "value": "com.acme:the_policy_id",
  "revision": 42,
  "timestamp": "2021-01-18T09:42:12Z"
}