eosuscsystem

{
  "name": "s_referrer",
  "base": "",
  "fields": [
    {
      "name": "user",
      "type": "name"
    },
    {
      "name": "code",
      "type": "uint64"
    },
    {
      "name": "referrer",
      "type": "name"
    },
    {
      "name": "time",
      "type": "uint32"
    }
  ]
}