Get study configuration by key

{
  "study": {
    "id": "64b8f0f2e1b1c8a1d2e3f4g5",
    "key": "string",
    "secretKey": "string",
    "status": "string",
    "props": {},
    "configs": {},
    "notificationSubscriptions": [
      {}
    ],
    "stats": {},
    "nextTimerEvent": 0,
    "rules": [
      {}
    ]
  }
}

{
  "error": "string"
}

{
  "error": "string"
}

{
  "error": "string"
}