curl --request GET \
  --url https://matcher.sandbox.lerian.net/v1/config/contexts/{contextId}/rules/{ruleId} \
  --header 'Authorization: Bearer <token>'

{
  "config": {},
  "contextId": "<string>",
  "createdAt": "<string>",
  "id": "<string>",
  "priority": 123,
  "type": "EXACT",
  "updatedAt": "<string>"
}