code: function sendPrivatePayment(peer, arrChains) {
  	let ws = getPeerWebSocket(peer);
  	if (ws)
  		return sendPrivatePaymentToWs(ws, arrChains);
  
  	findOutboundPeerOrConnect(peer, function (err, ws) {
  		if (!err)
  			sendPrivatePaymentToWs(ws, arrChains);
  	});
  }
docs: sends multiple private payloads and their corresponding chains