setcontracts

{
  "name": "user_limit",
  "base": "",
  "fields": [
    {
      "name": "user",
      "type": "name"
    },
    {
      "name": "times",
      "type": "int32"
    },
    {
      "name": "adids",
      "type": "string"
    },
    {
      "name": "last_time",
      "type": "uint64"
    }
  ]
}