logstash 使用jdbc模块保留message原始值，我想让json里面包含message所有信息

我现在输出的值没有message字段是怎么回事儿
 {
          "device_os" => "Android",
         "android_id" => "null",
    "client_language" => "0",
        "device_info" => "samsung SM-T700",
         "os_version" => "Android OS 6.0.1 / API-23 (MMB29K/T700ZCU1CQD1)",
}
 
我的过滤器配置
filter {

    mutate {
       remove_field => "@version"
       remove_field => "@timestamp"
       copy => {"type"=>"event"}
   }
   
   json {
        source => "message"
        
    }
  
}
 
我想要的是有message字段，包含原始信息
 
{
          "message" => "。。。。。。。。。"
          "device_os" => "Android",
         "android_id" => "null",
    "client_language" => "0",
        "device_info" => "samsung SM-T700",
         "os_version" => "Android OS 6.0.1 / API-23 (MMB29K/T700ZCU1CQD1)",
}