{
  "manageEntity": {
    "action": "Create",
    "entityId": "579008501",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"playlist_id\":579008501,\"description\":\"\",\"playlist_name\":\"New playlist\",\"is_private\":true,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"upc\":\"\",\"artists\":null,\"copyright_line\":null,\"producer_copyright_line\":null,\"is_image_autogenerated\":false,\"playlist_contents\":[]}}",
    "nonce": "0xf698ce490fc8c9de7d00cfc21291e8965a15679f63dbfac0c9d91f1110a73a68",
    "signature": "0xfaab5471dd8faa99e416379a5da412e19cec61906e620345249be44350be485259891dcf300036fd23f428c1e9579545ab42adee714c85c4db43b9b611cbe5ad1b",
    "signer": "0x12Dd122e04eDA14fA483f2F178ea67E04fd312B9",
    "userId": "388523895"
  }
}