bridge.start

{
  "name": "init",
  "base": "",
  "fields": [
    {
      "name": "admin_account",
      "type": "name"
    },
    {
      "name": "current_chain_name",
      "type": "name"
    },
    {
      "name": "expire_after_seconds",
      "type": "uint32"
    },
    {
      "name": "threshold",
      "type": "uint8"
    }
  ]
}