1. In the /storage/ folder, you can see all the signs on the server, but is there a way to look them up? I want to get the location for the sign.

    Example: /my_server_identity/storage/100070/1063/2728181849
    Where 2728181849 is the image
     
  2. You can parse your save file and find owner
     
  3. Try looping over all Signage objects and filtering objects by textureID;
     
  4. ok so now I realize it's /storage/entity_id/, I can work with that :p