{
  "manageEntity": {
    "action": "Update",
    "entityId": "1419068000",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"description\":\"\",\"playlist_name\":\"1\",\"is_private\":false,\"playlist_image_sizes_multihash\":\"baeaaaiqsecxpphdt4f4jramszrwhv6y3vityl6sdt7vze7lde6zuumvcq3a5o\",\"ddex_release_ids\":null,\"ddex_app\":\"\",\"upc\":\"\",\"artists\":null,\"copyright_line\":null,\"producer_copyright_line\":null,\"is_image_autogenerated\":false,\"playlist_contents\":[{\"timestamp\":1782262343,\"metadata_timestamp\":0,\"track_id\":1580526313}]}}",
    "nonce": "0xf3dad6fd4a0e740d3690dce823a68198c2f601a5def9939ce53cd3ef5b0d6529",
    "signature": "0xac94a2690726a4a8effe6250509082de48f3fb07bb834438112828a8c015aa382f6e89c36f01ddcc39ca500b18494fb67b515f6513213fe3872dd03cd2a6dca81b",
    "signer": "0x7B8E04A1EF95c249cC35d1D71EfBF45723FF5854",
    "userId": "466587821"
  }
}