{
  "manageEntity": {
    "action": "Update",
    "entityId": "508931608",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x3f85f3b4eb2ab53275c1d124aa6f13945d9f3635a7fd0d4c2d4088a08ecf9226",
    "signature": "0x858347bd282382370f226f24ad6b515dbd614be8caef55a1c5373edc4f7ddd8e20df06a6f06b0b28507169aac3135b4275fc70965b0b1931a94fbfac067d20611b",
    "signer": "0x69163Aed5B32EC7f6C8a1e4aDEd7fD7E298F9521",
    "userId": "508931608"
  }
}