ifswap.com

{
  "name": "assets",
  "base": "",
  "fields": [
    {
      "name": "token_id",
      "type": "uint64"
    },
    {
      "name": "balance",
      "type": "int64"
    },
    {
      "name": "stake_age",
      "type": "uint128"
    },
    {
      "name": "age_time",
      "type": "time_point_sec"
    }
  ]
}