{
  "manageEntity": {
    "action": "Update",
    "entityId": "171594868",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera5siaxlnd2tr4rmyh4y3gcbvxuruwpobtyhjm43cj6ddq5lrpelnq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":177905104},{\"type\":\"playlist\",\"playlist_id\":1694618767},{\"type\":\"playlist\",\"playlist_id\":971818751}]}}}",
    "nonce": "0x752af7946ecf2f5b842754a479b2af52643b3baff6f30a6ec3f3a1cdecc4d758",
    "signature": "0xb3928a6b141578f45daf43dd3e9417e17d83de69fe9d9d60c4b0028f4e4c813043a986786ad89a36333801dc0423c0d530a1e1bf72caf039ed2bceca2588a4891b",
    "signer": "0x9C1F89CDE33F8110394DfA4a5Af51201f8Ee41fB",
    "userId": "171594868"
  }
}