How Can I better structure a International Partnership? International Investor with $1.5 Millions to invest? scam or not?

[Rey Perez]

I am a beginner Real Estate Investor operating in the State of Pennsylvania. throughout friendship and networking I have developed local as well as International Connections and they requested me to fund me a Personal Loan of $1.5 Millions for a 10% fixed Interest for 5 years with a Balloon Payment at the end of the 5 years, The Funding will be used for my Real Estate Investment Business (Buying & Selling Houses, Buying & Holding Houses ) . He sent me a Promissory Note. i'm planing on creating an LLC and a Operating Agreement spelling out our partnership. I want to find out the Legitimacy of the Funds and the partnership since he's located in Nigeria. Also wanting to know how can i better structure the agreements and paperwork needed. Any advice will be Highly Appreciated.