{
  "manageEntity": {
    "action": "Update",
    "entityId": "44771322",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"description\":\"\",\"playlist_name\":\"New playlist\",\"is_private\":true,\"playlist_image_sizes_multihash\":\"baeaaaiqsecuivvjuwgkg323jecusguq6jvspis4gwerc3kd7t7zfpgzwgfxpm\",\"ddex_release_ids\":null,\"ddex_app\":\"\",\"upc\":\"\",\"artists\":null,\"copyright_line\":null,\"producer_copyright_line\":null,\"is_image_autogenerated\":true,\"playlist_contents\":[{\"timestamp\":0,\"metadata_timestamp\":1777400927,\"track_id\":66779933}]}}",
    "nonce": "0x73d15331c3ef9e3c6f0ff3aadb91e390e472e8ab1b94e7757b6a6b928aa94871",
    "signature": "0x7df31cafa19565575069dd164cfd188a3a464dea3437715fc3892c2d40d9a7c06df57e0f4419d057766d115fe4c2c769a7f5fa6cbf12b1a41d22e9e116dbea331b",
    "signer": "0xD65fC4130218Cd51217b39674E447D5ABeDFFe81",
    "userId": "659480805"
  }
}