bankofstaked

{
  "name": "history",
  "base": "",
  "fields": [
    {
      "name": "id",
      "type": "uint64"
    },
    {
      "name": "content",
      "type": "string"
    },
    {
      "name": "created_at",
      "type": "uint64"
    }
  ]
}