{
  "manageEntity": {
    "action": "Update",
    "entityId": "577745560",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieralptw3i7bf6bifyoxtlu5vnttck3dpwqm6yyebv33uaynogfbjdna\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":649011190},{\"type\":\"playlist\",\"playlist_id\":748115907},{\"type\":\"playlist\",\"playlist_id\":558862778},{\"type\":\"playlist\",\"playlist_id\":360266307},{\"type\":\"playlist\",\"playlist_id\":1584499564},{\"type\":\"playlist\",\"playlist_id\":1672094769}]}}}",
    "nonce": "0x9001110eab31df84dcd2c293982a77a2c4621444a33c8159723a958058034a1a",
    "signature": "0x6f13305756956239904ba00819f77887063ac8a308b89f9864dbe07e3452fd3c66e4b606df685a6cfb1565494429165faad3d3c4d90233c2c125cd58fca92e051b",
    "signer": "0x569AD4a425B92a964d8e182094f4aC58C0673162",
    "userId": "577745560"
  }
}