{
  "manageEntity": {
    "action": "Update",
    "entityId": "822518796",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraui6nhexj4gaqax64s54bdauj2ouclcnqdsutv52ltrk3pwgazn7q\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":787448743}]}}}",
    "nonce": "0xc9ac1862b7fadc3bbd9a5a6545bb5fe3eee59499b15ef85a66339fe30b1861ef",
    "signature": "0x6a5977b115a1c8e63f6e06c4d05843158398339c7d70c81acc221141475ea9c80cf41015001e7de6ba13637c642255d984d36d5302f4e654475974ccd98f28ed1c",
    "signer": "0x89EA9Be0Cefd53f285d77356b4395f079931a5EC",
    "userId": "822518796"
  }
}