Convert Generic Diagram Description To Plantuml Script

Translate the json data representing the diagram data into a plantuml script considering:

1. The participants' shape must be translated in their plantuml counterpart using the following conversion rules :

   • "rectangle" shape must be translated into plantuml's "rectangle"
   • "circle" shape must be translated into plantuml's "circle"
   • "person" or "stickman" shape must be translated into plantuml's "actor"
   • "oval" or "ellipse" shape must be translated into plantuml's "usecase"
   • "cylinder" shape must be translated into plantuml's "database"
   • "diamond" shape must be translated into plantuml's "hexagon"

2. Each recognised participant must be written in the form: "" "" as >

3. Relations must be the arrow that connect participants

4. Put diagram description in the legend of the diagram in the form: legend

   end legend

5. Put diagram title in the form: title ""

diagram data: {diagram_description}