{
  "manageEntity": {
    "action": "Create",
    "entityId": "1900433197",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"playlist_id\":1900433197,\"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": "0x39841bf5106d85ed23c425b378d2102386d51105d5f2956f723f064ce4d86e72",
    "signature": "0xe13e931a66329b157bef505eb98fdc0e1c361bc3e673e8aa00335be29aad00756ea6be77d03eca39b9a3d47f9046228dfff976a929904877bd523d41fe33cb0b1c",
    "signer": "0x4f5054353677594Da8B00602DF03a2C18aB5a9Ea",
    "userId": "897638994"
  }
}