client-secret is present only when include-secret=yes was passed.{
"client-id": "horizon.example",
"client-secret": "0f5c2a1b9d8e4f7a0c3b6d1e8f2a4c9b",
"client-secret-set": "yes",
"redirect-uri": "https://portal.example.com/oauth/callback"
}