{
  "manageEntity": {
    "action": "Update",
    "entityId": "224019652",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x552b061d2c3dc569adab60640ae0e9bf6b11147c11581fb66b0ed8227b1ceaa5",
    "signature": "0x15699d2319229b56aac43bf7dd26775ce2b8c848e7f401fc8ffb76595192021222e58e35d1f8e8f22ccea36ca55cef65df5815957fa5354e63ce07fdc969b0c81c",
    "signer": "0x7964a5eF7E9a780013d3886B40ca04443D69588D",
    "userId": "224019652"
  }
}