There is a site to simplify work with Display Entity, or rather modeling, after creating a model or taking it from the catalog, you can select a command to insert - axioms or a command block
Catalog:
https://block-display.com/
Editor:
https://bdengine.app/
this is what i created there -
Create and publish 3D models for Minecraft with BDEngine - no mods or installations required. Online editor, model catalog, animations, command export and cloud storage.