{
  "manageEntity": {
    "action": "Create",
    "entityId": "2122221079",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"playlist_id\":2122221079,\"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": "0xaa74a057a1c7ee071d86d43d1afded5a7400634eeb8cead767bc79901f64e764",
    "signature": "0xf965b0f7543c74d0923338dda7a68b9b16dc1e5dd8261fd1b1efc026058be27e4805a605173c31186b9d9abf3dfb77d5ca0073856058d676e9ab01d1d30a6e321c",
    "signer": "0x1937D024384aA93c106591013814657C052cF268",
    "userId": "586538062"
  }
}