curl --request GET \
  --url http://localhost:4000/api/datafeed/symbol_info

{
  "symbol": [
    "<string>"
  ],
  "description": [
    "<string>"
  ],
  "exchange-listed": [
    "<string>"
  ],
  "exchange-traded": [
    "<string>"
  ],
  "minmov": [
    123
  ],
  "minmov2": [
    123
  ],
  "pricescale": [
    123
  ],
  "has-dwm": [
    true
  ],
  "has-intraday": [
    true
  ],
  "has-no-volume": [
    true
  ],
  "type": [
    "<string>"
  ],
  "ticker": [
    "<string>"
  ],
  "timezone": [
    "<string>"
  ],
  "session-regular": [
    "<string>"
  ]
}