{
  "action": "<string>",
  "params": "<string>"
}

{
  "ev": "<string>",
  "sym": "<string>",
  "bx": 123,
  "bp": 123,
  "bs": 123,
  "ax": 123,
  "ap": 123,
  "as": 123,
  "c": 123,
  "i": {
    "item": 123
  },
  "t": 123,
  "q": 123,
  "z": 123
}