{
  "manageEntity": {
    "action": "Update",
    "entityId": "350957781",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierazbyfke6c2qilphjsvgnh4pnca5ezhfzf56udilofemym6kurfj3q\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":1851424531},{\"type\":\"playlist\",\"playlist_id\":1065725673},{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":435677023},{\"type\":\"playlist\",\"playlist_id\":470796622}]}}}",
    "nonce": "0x3fe7c9dfdbd98f6de1bec6f9e8971214e9b517d561498f16c0c9656f01aba892",
    "signature": "0x6e2a4cec9fc5b6984582a3dd996ddbcbb46697ec8980782e6eb0c98e1a7a381027615b76599aaa749a7b8b52c081620f79117939aeff3561a68046943a86a8b81c",
    "signer": "0x9742BFcda3E998678A9f313149c705E80899d5c5",
    "userId": "350957781"
  }
}