handler () {
  set -e

  # Event Data is sent as the first parameter
  EVENT_DATA=$1

  # This is the Event Data
  echo $EVENT_DATA

  # Example of command usage
  EVENT_JSON=$(echo $EVENT_DATA | jq .)

  # Example of AWS command that's output will show up in CloudWatch Logs
  echo "I am a Bash command!"

  # This is the return value because it's being sent to stderr (>&2)
  echo "{\"success\": true}" >&2
}