{
  "manageEntity": {
    "action": "Create",
    "entityId": "1374159543",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"playlist_id\":1374159543,\"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": "0xac49b37f69232075ab859d59b5785da185eca2b1700ead4039fe1c2095002f06",
    "signature": "0xc16750e75f24c71dcf0e4aa657359bcb03079d3fc6933f8723d399c622fdc31707daf6831f42857b178a8c6dfd9061ea5616e5ec343ab69adbed0aaca4680b781c",
    "signer": "0x3D404150df166aF4b6f7F3707820C34799C06190",
    "userId": "794658727"
  }
}