{
  "params": {
    "signed_blocks_window": "string",
    "min_signed_per_window": "string",
    "downtime_jail_duration": "string",
    "slash_fraction_double_sign": "string",
    "slash_fraction_downtime": "string"
  }
}

{
  "error": "string",
  "code": 0,
  "message": "string",
  "details": [
    {
      "type_url": "string",
      "value": "string"
    }
  ]
}