minecraft-bedrock-json-schemas/source/resource/textures/texture_list.json

{
  "$schema": "http://json-schema.org/draft-07/schema",
  "title": "Texture List",
  "description": "A list of texture to load in.",
  "type": "array",
  "items": { "title": "Filepath", "type": "string", "pattern": "^textures/", "examples": ["textures/blocks/"] }
}