{
  "manageEntity": {
    "action": "Update",
    "entityId": "211770148",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraauzi53nzbuuss3itidl2jya6m5yavvrl65lf4ltecv3twec4452q\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":39848}]}}}",
    "nonce": "0x7a2aff6ea070e1a5f3041ae229a1dd485b4a5d1ed0225feeed67a8ebdcdaf2dc",
    "signature": "0xbbc400a43d3bcda30d42511977700e0f39f5c939813d46d356e07429d43f9362104105a69ea814e27147cb938420b41ec2e3eda0dce9b042f9cb3f8e65f15f6c1c",
    "signer": "0x72dD6E54C1904BDCf2b8a654d8CD35Ba1CeE11F8",
    "userId": "211770148"
  }
}