curl and zabbix

gistfile1.txt

curl -X POST -H 'Content-type:application/json' -d '{"jsonrpc":"2.0","method":"user.login","params":{ "user":"unamehere","password":"passwdhere"},"auth":null,"id":0}' http://zabbixserver/zabbix/api_jsonrpc.php

response: {"jsonrpc":"2.0","result":"hex-code-here","id":0}

requst:
curl -X POST -H 'Content-type:application/json' -d '{
    "jsonrpc": "2.0",
    "method": "problem.get",
    "params": {
        "output": "extend",
        "selectAcknowledges": "extend",
        "selectTags": "extend",
        "recent": "false",
        "sortfield": ["eventid"],
        "sortorder": "DESC"
    },
    "auth": "hex-code-here",
    "id": 1
}' http://zabbix.utraq.trlsoftware.com/zabbix/api_jsonrpc.php