{
  "manageEntity": {
    "action": "Update",
    "entityId": "987235245",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierafnewshukr4ckyotj572byodeyhi53u4y7sswzqgpes7nfx626otq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1984674782},{\"type\":\"playlist\",\"playlist_id\":499896367}]}}}",
    "nonce": "0xf675e0a8565ba4ff4e3517038d927f5b57f2363375121811775eaa12c293deac",
    "signature": "0x0699c7289d8a25901f2c948b790e7d9ed88c377ce7893c5a9191e7e4889fb3627e9037ae100a731a85e7c1a76ab94f66d0ee372b0704bcbd7abe18eb1e0d88d91c",
    "signer": "0xA4726dDaAF2af20D291A670299DaD1375F847b41",
    "userId": "987235245"
  }
}