iOS Instagram Databases

Does anyone know of any tool that will decode the instagram archive database? The data is storeed as a 'BLOB' and I am looking a way to reverse it in a plain text.

So far I am able to extract the blobs in hex and then convert it into ASCII. This gives me valuable information and I am able to read snippets of messages. However there are many characters that I am trying to find out if these characters hold any information such as date and time about the messages.

Peace.