{
  "manageEntity": {
    "action": "Update",
    "entityId": "280691557",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"description\":\"\",\"playlist_name\":\"Classical\",\"is_private\":true,\"playlist_image_sizes_multihash\":\"baeaaaiqsedt3b6quhwsjcnavpk55eblzprv2vxkdsvfpfgrn7e2c3lta3x5sq\",\"ddex_release_ids\":null,\"ddex_app\":\"\",\"upc\":\"\",\"artists\":null,\"copyright_line\":null,\"producer_copyright_line\":null,\"is_image_autogenerated\":false,\"playlist_contents\":[]}}",
    "nonce": "0x2fae8a8313b2afa189fef81faaf0bad2b93299cd5a15d30cc0d0900cb874b601",
    "signature": "0x3788d8653f27aa89878630ad82f06c75aa5edbad7d8f7d00268aef06a9b3a16f51888c9f3f5141f7822a7534c24f7e270b67fb579b586e53e134eb59d6b946c81c",
    "signer": "0x3DdfB99173Ed7ff3A083C9C589582B230d37906E",
    "userId": "192527938"
  }
}