Insight-api: Websocket "tx" event - which variables?
What you are looking for is in the lib\transactions.js file. Line 210 to 215.


  var transformed = {
    txid: transaction.txid(),
    valueOut: valueOut / 1e8,
    vout: vout,
    isRBF: isRBF,
  };


I took a quick glimpse, vout is an array and isRBS is a boolean.  

Honestly, I don't know why "processed" is in the documentation example. I might possibly have overlooked it, or maybe it could be a local produced string.