atomicmarket

{
  "name": "announceauct",
  "base": "",
  "fields": [
    {
      "name": "seller",
      "type": "name"
    },
    {
      "name": "asset_ids",
      "type": "uint64[]"
    },
    {
      "name": "starting_bid",
      "type": "asset"
    },
    {
      "name": "duration",
      "type": "uint32"
    },
    {
      "name": "maker_marketplace",
      "type": "name"
    }
  ]
}