{
  "manageEntity": {
    "action": "Update",
    "entityId": "746653634",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieradjrmn2icb673wq4rvwpbttetfs5yesnudvf4bdddeb4gq4e6ehfq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":571778935},{\"type\":\"playlist\",\"playlist_id\":447682511}]}}}",
    "nonce": "0x1dd5ee28adb187f1678a18d3b23124b1c9ab20057c52f9e3390e33ff2ce11654",
    "signature": "0xe74b0398c934cabeb5fd9bbc3fa921204b66f8bbf5842b75390c479c31e3c329669e41f997f53c059255f74e175449e6146aa77d9e7e2e7ca4799e8e02320aee1c",
    "signer": "0xD76961dc6890cF5F569eF04a2385c6A55b9b6a3B",
    "userId": "746653634"
  }
}