play.mars

{
  "name": "contribmiss",
  "base": "",
  "fields": [
    {
      "name": "mission_id",
      "type": "uint64"
    },
    {
      "name": "user_id",
      "type": "uint64"
    },
    {
      "name": "contribution",
      "type": "asset"
    },
    {
      "name": "discount_id",
      "type": "uint64?"
    }
  ]
}