{
  "manageEntity": {
    "action": "Update",
    "entityId": "999396914",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieratood4zequqj3xcg33m4fjnesiq4m4r4swx7jnwxsv4oqvstketnq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1362308373},{\"type\":\"playlist\",\"playlist_id\":220181064},{\"type\":\"playlist\",\"playlist_id\":2053536487},{\"type\":\"playlist\",\"playlist_id\":1801932596},{\"type\":\"playlist\",\"playlist_id\":283403557}]}}}",
    "nonce": "0xf99d655ce42691b48df1b372b1a1c79b6e0aff35a007572be5bd48ababcd30aa",
    "signature": "0x7f6dc2ab681641a87adff286c8cc4887320250fd1e236b3c2a6978ec67e4031c14ae9b432bbe07f00eb94a55c6bab306e4c4d1f25b7888b02f359323c5f1e49a1c",
    "signer": "0x447887A35958D25Fb5B659937312606ec7E55dBb",
    "userId": "999396914"
  }
}