{
  "manageEntity": {
    "action": "Update",
    "entityId": "210324631",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x45c30bb20f1b647f9d264b7fdc8fb7de9c605774d62a09ded563860a4416953f",
    "signature": "0xe9cb611e450ee5c5dc2bbf137ad9b84396282b4baab4109dc62833608b4b39ca192ceb90f5919c85caa24954d3606f7f865ed111fdd55a50c5687ab4b8ffa53e1b",
    "signer": "0x73676516aC24232516e3EaD23a00B1fEf8BFaf93",
    "userId": "210324631"
  }
}