{
  "manageEntity": {
    "action": "Update",
    "entityId": "672251661",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieralpk4ik22v73pygnaqlhf4qexvc2ddmqnao4x6d2oqknr5ktu75kq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1226788298},{\"type\":\"playlist\",\"playlist_id\":1404789603},{\"type\":\"playlist\",\"playlist_id\":1697319581}]}}}",
    "nonce": "0x984b836e7a9d6ffd9065b9fc7fe8de85848580a90e713f7af5bcd5969be192d9",
    "signature": "0xbf7dfd5649fcfe77520d7abaa56118ff74d1f409c2c8bf4dcae2d79dbfc2986c3e44fd24b0e25753ad3028db65267772bb670b192a6b5f20d3e00cce254896231b",
    "signer": "0xC5Ee9a72D83C8Dae889645372774B75CB639c662",
    "userId": "672251661"
  }
}