Retrieve API key

curl --request GET \
  --url http://localhost:{port}/namespace/{namespace}/bigPeer/{big_peer_name}/app/{app_name}/apiKey/{api_key_name}

{
  "description": "API key used for staging environment.",
  "expiresAt": "2100-04-13T12:00:00Z",
  "name": "<string>",
  "permissions": {
    "qlVersion": 0,
    "read": "<any>",
    "remoteQuery": false,
    "write": "<any>"
  }
}