bank.wal

{
  "name": "interest_rate",
  "base": "",
  "fields": [
    {
      "name": "rate_id",
      "type": "uint64"
    },
    {
      "name": "time",
      "type": "time_point_sec"
    },
    {
      "name": "interest",
      "type": "asset"
    },
    {
      "name": "contract",
      "type": "name"
    },
    {
      "name": "rate",
      "type": "float64"
    }
  ]
}