{
  "manageEntity": {
    "action": "Update",
    "entityId": "407898836",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf01ada27cde5d0622d20573357d096f6fd56e0cce725a8e3488d2db76e965e95",
    "signature": "0x975853880a58a3cd7ae39788f1801df1d3e7b81fd43bd7d99b6768179c4272512c30467e41b34239589c54713c2a449b25545773eaaf20eca162d024f927cab81b",
    "signer": "0x19aeE388f7964b65f4E881b15B7c800980e9aEd9",
    "userId": "407898836"
  }
}