{
  "manageEntity": {
    "action": "Create",
    "entityId": "1473359750",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"playlist_id\":1473359750,\"description\":\"\",\"playlist_name\":\"New Playlist\",\"is_private\":true,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"upc\":\"\",\"artists\":null,\"copyright_line\":null,\"producer_copyright_line\":null,\"is_image_autogenerated\":false,\"playlist_contents\":[]}}",
    "nonce": "0xe67f5b23d03db0542829a833e65d4ce9c1468dba6c116256df593a9c11fe2151",
    "signature": "0x7658cb3d002bdb3663aa581723205d67b4e0debfdcb4c74f38c07d4a97512ea16738bd481f1da5cc221178cbefc9448b32eed376fa9e9d6b32565716299f5b3a1b",
    "signer": "0x28E041745695914518512137a56c9810034C10B9",
    "userId": "134529"
  }
}