{
  "manageEntity": {
    "action": "Create",
    "entityId": "1880772551",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"playlist_id\":1880772551,\"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": "0x9415984ca9f958d7595678cae9ac419e786cb5c72c10b0325ba38545563f7973",
    "signature": "0xad30036339fc8af1d8b159e60ea111fe71665c98acfff720f5850d1f3b011a694e7225006b89ed2b0fbe5187a73ca5f83d68c061ff03cf265d68e834c5fd94ec1c",
    "signer": "0xb77532E43B032270b877fD424A7Fca08BE7D6eb2",
    "userId": "304682244"
  }
}