{
  "tiers": [
    {
      "active_requests": 0,
      "draining": false,
      "readiness_reason": "identity_passed",
      "readiness_state": "ready",
      "ready": true,
      "reason": "admitting",
      "state": "admitting",
      "expected_model": "served-model-1",
      "observed_model": "served-model-1"
    }
  ]
}