{
  "manageEntity": {
    "action": "Update",
    "entityId": "573321843",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierawor7dick5sxtluwoalq5daalf75prvn7avqop4y33wqsznwc6jhq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":145337133},{\"type\":\"playlist\",\"playlist_id\":196446224},{\"type\":\"playlist\",\"playlist_id\":233988368},{\"type\":\"playlist\",\"playlist_id\":572644640},{\"type\":\"playlist\",\"playlist_id\":625958052},{\"type\":\"playlist\",\"playlist_id\":870799141},{\"type\":\"playlist\",\"playlist_id\":927962274},{\"type\":\"playlist\",\"playlist_id\":1137669054},{\"type\":\"playlist\",\"playlist_id\":1681922741},{\"type\":\"playlist\",\"playlist_id\":1986860053},{\"type\":\"playlist\",\"playlist_id\":1436477984}]}}}",
    "nonce": "0xecb9f8b3459b59b9fea9a05c3c8287ebc99a2b3b1cc280fed7e7950a99960522",
    "signature": "0xd428435cb2e7e62e30d1f4fd878412ceaf4df6b6768b6eae588c259e6b26c9443dfd6db868b949de4345712edefcea24bcdbf8dbf5a5b1b821f8d2ce5be23ed31b",
    "signer": "0x3f609C772dBC213942aF1f563Dc3da5B6F6C9C0a",
    "userId": "573321843"
  }
}