savact

{
  "name": "Star",
  "base": "",
  "fields": [
    {
      "name": "amount",
      "type": "int64"
    },
    {
      "name": "user",
      "type": "bytes"
    },
    {
      "name": "mark",
      "type": "int64"
    },
    {
      "name": "gain",
      "type": "int64"
    }
  ]
}