setcontracts

{
  "name": "postnews",
  "base": "",
  "fields": [
    {
      "name": "news_id",
      "type": "uint64"
    },
    {
      "name": "amount",
      "type": "uint64"
    },
    {
      "name": "postby",
      "type": "name"
    }
  ]
}