Lambda function (python 2.7) to print back the parameters it receives.

lambda_function.py

import json

def lambda_handler(event, context):
    print('Received event: ' + json.dumps(event, indent=2))
   
    response = {
        "statusCode":200,
        "headers": { "Access-Control-Allow-Origin": " *", "Content-Type" : 'application/json' },
        "body": json.dumps(event)
    }

    return response