GraphQL API, how to obtain info about the last commits on a file

I’ve been trying to find a way of using the GraphQL API to find the details of the last commit, (specifically who committed it and the date of the commit), on a specific file, but no joy as yet.

Can anyone help me out?

For those looking for a solution, I got part of the information I wanted using:

query($projectPath: ID!, $filePath :String){
  project(Path: $projectPath) { 
    repository {
      tree(path: $filePath) {
        lastCommit {
          author {
            name
          }
          committerEmail
          committedDate
          authoredDate
        }
      }
    }
  }
}

Now I need to get the original date that the file was created.
Can anyone out there help?