{
  "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\":[{\"timestamp\":0,\"metadata_timestamp\":1776706772,\"track_id\":162823896},{\"timestamp\":0,\"metadata_timestamp\":1776706773,\"track_id\":1706163834},{\"timestamp\":0,\"metadata_timestamp\":1776706778,\"track_id\":1488811528},{\"timestamp\":0,\"metadata_timestamp\":1776706780,\"track_id\":326802186},{\"timestamp\":0,\"metadata_timestamp\":1776706784,\"track_id\":369342921}]}}",
    "nonce": "0x172e702a561e0d22f95f1815be8fd1230818355f9f0b5d54ad4f5d87ebb4a1f4",
    "signature": "0x709faa269349ef8121f6a1794ce4b3b863059214e17e15873122a8c0a3d7ce2a598d51de836674782f4b6d1c6d0c681e7e6d8888c6b3bd040e0ed864a88d95341c",
    "signer": "0x775bA7FB8a4FF9354c099465ca493BA949FdAca6",
    "userId": "597677270"
  }
}