{
  "manageEntity": {
    "action": "Update",
    "entityId": "1255197945",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"description\":\"\",\"playlist_name\":\"New playlist\",\"is_private\":true,\"playlist_image_sizes_multihash\":\"baeaaaiqsebttr5kyc3hksuezkl4vin6p2dhehe7wzomiapehdwijyql7xf2wk\",\"ddex_release_ids\":null,\"ddex_app\":\"\",\"upc\":\"\",\"artists\":null,\"copyright_line\":null,\"producer_copyright_line\":null,\"is_image_autogenerated\":false,\"playlist_contents\":[]}}",
    "nonce": "0x2db69f834b48d4686953fb45876ecff5dece82f79bde5dbbcd3f08f643b15f24",
    "signature": "0xfb504d24e58e296051f7312689f2bfaccb7064e6f94a0901cabeba091d452e334079aa11e50bb194b38b9b9be5ae5be0ed50b36f9dac28d7e67cb7209f06e3bd1b",
    "signer": "0x775bA7FB8a4FF9354c099465ca493BA949FdAca6",
    "userId": "597677270"
  }
}