Unity - Scripting API:

public static function Parse(text: string): Networking.NetworkHash128;

public static Networking.NetworkHash128 Parse(string text);

Parameters

text	A hex string to parse.

NetworkHash128 A 128 bit network hash object.

This parses the string representation of a NetworkHash into a binary object.

no example available in JavaScript

string assetStrng = "0176acd452adc180";
NetworkHash assetId = NetworkHash.Parse(assetString);