{
  "manageEntity": {
    "action": "Update",
    "entityId": "1357487530",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"description\":\"\",\"playlist_name\":\"New Playlist\",\"is_private\":true,\"playlist_image_sizes_multihash\":\"\",\"release_date\":\"2026-03-31T16:17:05.000Z\",\"ddex_release_ids\":null,\"ddex_app\":\"\",\"upc\":\"\",\"artists\":null,\"copyright_line\":null,\"producer_copyright_line\":null,\"is_image_autogenerated\":false,\"playlist_contents\":[]}}",
    "nonce": "0xa7770b8fda28183884f042a3642bf12f55c4cc394d735e5a0000d7f999db420e",
    "signature": "0x1eb0cee997f6d1b8ea700d2ec662cbb9ae5fddc8bbc09792ad601c5874a30a8e07821ff446364f511ff83dbaa631e3b4652a57d33abd082ea1f4b8d4c293676d1c",
    "signer": "0x4aa5a207F36Ff1E12cbEfB5ef08bb83F8bF21F68",
    "userId": "562613548"
  }
}