{
  "manageEntity": {
    "action": "Create",
    "entityId": "1407177838",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"playlist_id\":1407177838,\"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": "0x6997b0814e4408d38d2b59f3811403a38e50d639bdbb6cb96cd49ca326243d95",
    "signature": "0x7cc38c80ba1d40c7799f3383e0f3964fa8d189735214017d19f00c9d76245ee646c985ea280ea48bd8d89ed6eb4904c760a79d6b9ee2b48bd1b3fb623a0a8ce71c",
    "signer": "0xEC9099Ebf4e6B90938db6daD3c92A75e6D1a9aE8",
    "userId": "548806327"
  }
}