What is history in question for API call

[MotiBaadror]

What is history in below query? Is this something app should get from vector DB? Where to store user chat history?

{"about_me": "I am a student and I have some money that I want to invest.", "question": "Should I consider investing in stocks from the Tech Sector?", "history": [["What is your opinion on investing in startup companies?", "Startup investments can be very lucrative, but they also come with a high degree of risk. It is important to do your due diligence and research the company thoroughly before investing."]]}