{
  "manageEntity": {
    "action": "Create",
    "entityId": "590577199",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"playlist_id\":590577199,\"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": "0x6e9e20b78176c32297db8a2a189205c43bfeb0de738cd213571cb0c634d71d30",
    "signature": "0x6bc2b2eb4e7c7b103f916a7fec9e210872abdc5abf254caa3121dc9da61744697c3c5756714a9c60e70610d6df76c6a211195938872745cb5be0d0c7d16f46c91c",
    "signer": "0x39a7C13F3b1bd0348543eD06174A306230F8285D",
    "userId": "762940588"
  }
}