mutation CreateCourse($name: String!, $defaultOfferPrice: Double!) {
  createCourse(name: $name, defaultOfferPrice: $defaultOfferPrice) {
    id
    name
    status
  }
}

{
  "name": "string",
  "defaultOfferPrice": "value"
}

{
  "data": {
    "createCourse": {
      "id": "value",
      "name": "string",
      "status": "private"
    }
  }
}