{
  "manageEntity": {
    "action": "Update",
    "entityId": "579008501",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"description\":\"\",\"playlist_name\":\"RAP\",\"is_private\":true,\"playlist_image_sizes_multihash\":\"baeaaaiqsedclfxbos2drd6niy3de64hnirltkg5duyzfjibee3orbmskqoo72\",\"ddex_release_ids\":null,\"ddex_app\":\"\",\"upc\":\"\",\"artists\":null,\"copyright_line\":null,\"producer_copyright_line\":null,\"is_image_autogenerated\":false,\"playlist_contents\":[]}}",
    "nonce": "0x91f24c0aa2821a70ed9861831b4d1509bc2f71ff0d1672b4df923c71b8d5266c",
    "signature": "0x6a37780ac5c3d16ba7e4989370e2500c296c87ea4604f90a0fa9dff55e063d6c1c6f207e130c401399d497356b3e4c519bfb0cce9366f8c0eb48a4ccd62799021c",
    "signer": "0x12Dd122e04eDA14fA483f2F178ea67E04fd312B9",
    "userId": "388523895"
  }
}