Store JSON (JS) Response in AWS DynamoDB

I need to have someone with the knowledge of JSON (API Integration) and DynamoDB (AWS) to Store the response (column format in DynamoDB). It is an easy integration where we need to store the response from few API's in the DynamoDB database and apart from this need to add few extra columns (flags) to check if the new data which will be added to DynamoDB already exists in the DynamoDB or not.