{
  "manageEntity": {
    "action": "Update",
    "entityId": "198890948",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierabn3vh544ud6wmuxesqowhegep4vct3r2afwiefgbxmiqcfuwpf4q\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1678739187},{\"type\":\"playlist\",\"playlist_id\":2124203330},{\"type\":\"playlist\",\"playlist_id\":1723453025}]}}}",
    "nonce": "0x368c8b2cae0329fdca5a6026ce3f3284e2a8d5fce15a2e3266921419679fcc02",
    "signature": "0xa3b2b6f7ce82eba1491462fa92fed3b96061a5c8ce5b5639c6298e8a1b15ea612ae0752fcff43c833b906dd3cbc06507eea32c3a3d71e7cf493b12d510eece9a1b",
    "signer": "0xaDC9D4604F02A3d510468234256a0815f96F0D3C",
    "userId": "198890948"
  }
}