{
  "manageEntity": {
    "action": "Update",
    "entityId": "340906926",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xa9ebb192c6f1799ed6ae31dbf9bf0f96b3ec58080ab50469ff08d166a300e1b0",
    "signature": "0x800ef032a3ecf03ebc41b4b47178d1b2b43b1c8327a290663fee9dfa64c43b631c744414cadbd8f71d6671927136b17cff43f1c75ba198b0d673d174579e57b21c",
    "signer": "0xFe04380B93FA8F3107E8954d8a21fbF10030c9DB",
    "userId": "340906926"
  }
}