gotciosource

{
  "name": "modifymargin",
  "base": "",
  "fields": [
    {
      "name": "account",
      "type": "name"
    },
    {
      "name": "currency_id",
      "type": "uint64"
    },
    {
      "name": "margin",
      "type": "uint64"
    },
    {
      "name": "memo",
      "type": "string"
    }
  ]
}