{
  "manageEntity": {
    "action": "Create",
    "entityId": "1723453025",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"playlist_id\":1723453025,\"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": "0x9563c4c5e7fb8ff64f86bdf7c908d15845dd71c949c6b13bea523f4ba59d107f",
    "signature": "0x25816e41b6837972ad389f5c31b50b135a59436b0aeb3a503e900f10b2bd12a90fa51c857078081c59d8c8f4319ab77f807d4c29194cde74eaa476b0468690c71c",
    "signer": "0xaDC9D4604F02A3d510468234256a0815f96F0D3C",
    "userId": "198890948"
  }
}