{
  "manageEntity": {
    "action": "Update",
    "entityId": "448693482",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieradzyabyjy6g3zimwmrv6cnxmvooin3x3wvtc25fd2u2uwdgy7toja\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":766186425},{\"type\":\"playlist\",\"playlist_id\":2017471218},{\"type\":\"playlist\",\"playlist_id\":770551421}]}}}",
    "nonce": "0x632c9e1c73b1da779b040ab7d59f1745c1f4dae739bd07bd91f39a9a11f3c9b2",
    "signature": "0x5e3564aa2fc4eed88939a49c2aab63dba9be7fe1b17faba64cd3866e8df2af955c75cfd82554368c574507c36dbe62035e8ccb6692317a52fd0bff02fe900e9a1b",
    "signer": "0x239136F5cc278393F2dF9D61b8477152F8057009",
    "userId": "448693482"
  }
}