{
  "manageEntity": {
    "action": "Update",
    "entityId": "199516921",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieralaeitfsfua5xjgux2jesc6vx4j5mlsvi5zxa4nkixft3mkcaly5q\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":631542371},{\"type\":\"playlist\",\"playlist_id\":1638193401},{\"type\":\"playlist\",\"playlist_id\":366181211},{\"type\":\"playlist\",\"playlist_id\":1291205104},{\"type\":\"playlist\",\"playlist_id\":315867420}]}}}",
    "nonce": "0x60f29e08a0c2751321a7593cff582eb11d1580fd2135822230ec57b5e77b40cd",
    "signature": "0x6b463ba40db9dd2a0c77376f1432568dadbc7d591b1556f915be18cebff724fe29fc3535297455a287a7c3ab1b326a612c7a5f34e9abed333261b50ccda723701c",
    "signer": "0x49A438454131D4e8F2A2547287Fc46167b168F47",
    "userId": "199516921"
  }
}