curl --request POST \
  --url https://api.anchorbrowser.io/v1/sessions/{sessionId}/uploads \
  --header 'Content-Type: multipart/form-data' \
  --header 'anchor-api-key: <api-key>' \
  --form file=@example-file

{
  "data": {
    "status": "success",
    "message": "File saved at /uploads/example.txt"
  }
}