curl --request GET \
  --url https://api-next.ofauth.com/v2/vault/cache/status \
  --header 'apiKey: <api-key>' \
  --header 'x-connection-id: <x-connection-id>'

{
  "connectionId": "<string>",
  "totalMedia": 123,
  "cachedCount": 123,
  "pendingCount": 123,
  "totalSizeBytes": 123
}