Class diagram for JSON file

I am expert in desiging UML diagrams  specially with MS Visio, Argo UML and Lucid. I have hands on experience working with the same. I can easily design class diagrams, sequence diagram, activity diagrams, usecases and many other diagrams needed for software architecture. I can design entire database schema and UML diagrams considering object oriented concepts into implementation. I am new here but I provide best results in short time. Please give me a chance to deliver my best services to you.   

Hi, Greetings and hoping you are doing well, i welcome you to my profile where quality and client satisfaction is the Priority. I am Expert Joseph and i hope to cooperate with you on your project titled (Class diagram for JSON file) . CERTIFIED EXPERT IN LISTED PROJECT SKILLS & REQUIREMENTS, After KEENLY reading your description and being in possession of all CLEARLY STATED REQUIRED SKILLS (JSON and UML Design) as this is my area of PROFESSIONAL SPECIALISATION having the above QUALIFICATIONS, i hereby humbly request you to consider my bid for QUALITY and PROFESSIONAL work. ###// No timeline & Quality Excuses// Unlimited Revisions// 100% SATISFACTION GUARANTEED### Message Me We Discuss More About The Project. incase the project is deleted please hire me directly using the following link; https://www.freelancer.com/u/freelancerngunzu THANK-YOU & WELCOME.

I have experience with system-analyze and er-diagram. If you need any help or more informationplease contact me.