api gateway to kinesis template

api_gateway.v

#set($p = 'pik='+ $util.urlEncode($util.base64Decode($input.params('d'))) + 
     '&user_agent=' + $util.urlEncode($context.identity.userAgent) +'&client_ip=' + 
     $util.urlEncode($input.params().header.get('X-Forwarded-For')))
{
 "Data" : "$util.base64Encode($p)",
 "PartitionKey": "$context.requestId",
 "StreamName": "TrackerStream"
}