请问h代表的意思? (豆瓣 INTP小组)

{"entityMap": {"0": {"data": {"src": "https://img3.doubanio.com/view/group_topic/l/public/p170200694.webp", "id": "170200694", "caption": ""}, "type": "IMAGE", "mutability": "MUTABLE"}, "1": {"data": {"src": "https://img3.doubanio.com/view/group_topic/l/public/p170200704.webp", "id": "170200704", "caption": ""}, "type": "IMAGE", "mutability": "MUTABLE"}}, "blocks": [{"text": " ", "entityRanges": [{"length": 1, "key": 0, "offset": 0}], "depth": 0, "key": "", "inlineStyleRanges": [], "type": "atomic"}, {"text": " ", "entityRanges": [{"length": 1, "key": 1, "offset": 0}], "depth": 0, "key": "", "inlineStyleRanges": [], "type": "atomic"}]}