{
  "manageEntity": {
    "action": "Update",
    "entityId": "529043491",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraikga2gqv7z5wt4xopjwktygleadgx5lii4pnxqvhdifx6uumymfa\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1764163379},{\"type\":\"playlist\",\"playlist_id\":2138488317},{\"type\":\"playlist\",\"playlist_id\":765365881},{\"type\":\"playlist\",\"playlist_id\":656274224},{\"type\":\"playlist\",\"playlist_id\":479788563},{\"type\":\"playlist\",\"playlist_id\":577142355}]}}}",
    "nonce": "0xe3a647891fb1e7f6d41e46ad3b5c000bac39442d6c942f9e7f2550280071c902",
    "signature": "0x09fc2daeccacf1de4eca845ac8b8cd1fa9003f713d89342c459175acb05c677169979067219ba949bbd6d791a26e9bbf52fd7dae7d3d6f3ae9725e688df4219f1b",
    "signer": "0x8c3D8e454ea9CcE088D27D75B35589eADA5Cd487",
    "userId": "529043491"
  }
}