オブジェクトの最後のメッセージのリストを取得する

リクエストパラメータ：

obj_id 

max_dt 

message_type 

応答

応答テンプレート：

{"カウント"：<カウント>、 "メッセージ"：<メッセージ>}

応答パラメータ：

メッセージ

例

リクエスト例：

http://morseti.barkuan8.com/ts/json_api;jsessionid=0ABDEF9131EBF68D1418589584CA984D?cmd=messages/get_last_messages&params={"obj_id":10524,"max_dt":"01.07.2016T00:00:00","count":5,"message_type":1}

応答例：

{"count":2,"messages":[{"dt":"30.06.2016T23:59:26","id":1006124,"lon":76.9858304,"trend":91,"satellite_cnt":10,"location":"132, улица Майлина, Altyn Kol, Almaty, 050039, Kazakhstan","speed":0,"alt":693,"params":"param0=param0, din1=0, din2=0, din3=0, din4=0, gsm_level=4, move_sensor=1, ain1=1175, ain2=25, ain3=18, ain4=2, ext_pwr_volt=12082, gps_pwr=1, speed=0, odom_val=0","lat":43.3409344},{"dt":"30.06.2016T23:58:25","id":1005968,"lon":76.9858496,"trend":84,"satellite_cnt":10,"location":"132, улица Майлина, Altyn Kol, Almaty, 050039, Kazakhstan","speed":0,"alt":694,"params":"param0=param0, din1=0, din2=0, din3=0, din4=0, gsm_level=4, move_sensor=1, ain1=1185, ain2=6, ain3=1, ain4=2, ext_pwr_volt=12086, gps_pwr=1, speed=0, odom_val=0","lat":43.3409312}]}