{
  "manageEntity": {
    "action": "Create",
    "entityId": "107003421",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"playlist_id\":107003421,\"description\":\"\",\"playlist_name\":\"My 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": "0xe2a34910fe1c3246e5a03220e27c6dd50e8855f92309776d5ec3b44481aff3e9",
    "signature": "0xb1d78dc320ac540a03af7cc43efb1cdcdadc27d945bfac81067e42e3fb8f36d572a7a135483173d5abd1f1cf3b2ddf53bfc7d56af139c3062498eacad6ac669d1b",
    "signer": "0xA4f8F04aea91a96555C278a3F006Ba7b6be12A69",
    "userId": "739209316"
  }
}