mutation SetGitHubReviewThreadResolved($threadId: ID!, $resolved: Boolean!) {
  setGitHubReviewThreadResolved(threadId: $threadId, resolved: $resolved) {
    id
    isResolved
    viewerCanResolve
    viewerCanUnresolve
    resolvedBy {
      login
      avatarUrl
      url
    }
  }
}

{
  "threadId": "id",
  "resolved": true
}

{
  "data": {
    "setGitHubReviewThreadResolved": {
      "id": "id",
      "isResolved": true,
      "viewerCanResolve": true,
      "viewerCanUnresolve": true,
      "resolvedBy": {
        "login": "string",
        "avatarUrl": "string",
        "url": "string"
      }
    }
  }
}