challengeyou

{
  "name": "withdraw",
  "base": "",
  "fields": [
    {
      "name": "from_username",
      "type": "name"
    },
    {
      "name": "to_account",
      "type": "name"
    },
    {
      "name": "quantity",
      "type": "asset"
    },
    {
      "name": "memo",
      "type": "string"
    }
  ]
}