def valid_post_signature(request, signature_header=SIGNATURE_BODY_HEADER):
 return valid_signature('Body:{}'.format(request.body), request.headers.get(signature_header), field='body')

def valid_post_signature ( request , signature_header = SIGNATURE_BODY_HEADER ) : return valid_signature ( 'Body:{}' . format ( request . body ) , request . headers . get ( signature_header ) , field = 'body' )
validate that the request has a properly signed body .