{
  "manageEntity": {
    "action": "Update",
    "entityId": "603916020",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xaddc3b3f28fb1a3096910c585eb984af6ade9c4c2dcc534396140460b842fc11",
    "signature": "0xa814ca164a7cd84682811d12e92358fcab3beebc6d391505a293cf4f15f19df5159c974bfef755f3615b823e4ada77e6af240ef83f3f776fed4c4c8c7f0c9b051b",
    "signer": "0xE35DcC5C816D790A9f730B4696F43Caf64d5d1e6",
    "userId": "603916020"
  }
}