core.ogx

{
  "name": "exchange_rate",
  "base": "",
  "fields": [
    {
      "name": "id",
      "type": "uint64"
    },
    {
      "name": "timestamp",
      "type": "uint64"
    },
    {
      "name": "rate",
      "type": "uint128"
    }
  ]
}