{
  "manageEntity": {
    "action": "Update",
    "entityId": "323426295",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7dtusy64wgwqies7ap3pqzf7un3uheh4qjnhrkbad3qproo6w2sq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1116320869},{\"type\":\"playlist\",\"playlist_id\":302352692}]}}}",
    "nonce": "0x4b2423e2a931eb31999953a3e43c6b684668a87588d80153f04b96b71c10f1af",
    "signature": "0xf48887c376583b110554f4d5f67d1398118492482a2faf2e98eafbb29c45cfea12858c097a3b508e39db460f0da1b3127c79dc1bc9362769f3c13a08bdff0d071c",
    "signer": "0xb4d13032C460384cd2965fe5ce69B5d869207DfA",
    "userId": "323426295"
  }
}