{
  "manageEntity": {
    "action": "Update",
    "entityId": "384940783",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x18ffe6c14bdcce79ce1c1e085cf1d54e825631711bb4ca0e9142418bb0d5ca88",
    "signature": "0x09f93fde9d83fb049ea7c38bb6c2d394f946e1110eb539cf4213dbfdecb4da7059e0425c840b4ed7b5be06f76452bc94151ee41e1d6db04b77762d222b06b8561c",
    "signer": "0xfC17Fc8798beaE2f98ee6Bd874e12e6A904a23C5",
    "userId": "384940783"
  }
}