atomicassets

{
  "name": "logrampayer",
  "base": "",
  "fields": [
    {
      "name": "asset_owner",
      "type": "name"
    },
    {
      "name": "asset_id",
      "type": "uint64"
    },
    {
      "name": "old_ram_payer",
      "type": "name"
    },
    {
      "name": "new_ram_payer",
      "type": "name"
    }
  ]
}