{"blocks": [{"key": "601d0002", "text": "Scenario", "type": "header-two", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "1666f929", "text": "Facebook has launched an Android-only lightweight app called FB Light in emerging markets to grow MAU, but after one year the retention rate is low.", "type": "unstyled", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "6e06c757", "text": "Question", "type": "header-two", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "b5a1ead9", "text": "How would you diagnose and determine the root causes of the low retention for FB Light?", "type": "unstyled", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "6fc08ded", "text": "Hints", "type": "header-two", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "e86239e9", "text": "Use a structured framework: cohort retention analysis, segmentation (device, network, country), funnel drop-offs, qualitative feedback, competing apps, and propose experiments or product changes.", "type": "unstyled", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}], "entityMap": {}}