{
  "manageEntity": {
    "action": "Update",
    "entityId": "198890948",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraajdwewmquym75obxt5pbtoxm72d6csmpq5qfz6frdwtw3gbgx35a\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1678739187},{\"type\":\"playlist\",\"playlist_id\":2124203330}]}}}",
    "nonce": "0x39077ee1682bd4a3e912d7c6ad71b542e518efa56e6a64133a6869edc1dca424",
    "signature": "0x30fc9ba9534dd5fd3f08f779838d37b2eb74be188f20207a1c8744842a991e215f8d0b9c91559273fe1469a6fdbc6bd1749c4d7cb3b9c9cb8d992420787cecaa1b",
    "signer": "0xaDC9D4604F02A3d510468234256a0815f96F0D3C",
    "userId": "198890948"
  }
}