{
  "manageEntity": {
    "action": "Create",
    "entityId": "142619671",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"playlist_id\":142619671,\"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": "0xf4137cbc51becb468cf63fb2511970744fa9264e1ec0a248f82f862b3366c15c",
    "signature": "0xbebec46bfc64144f32f47500a6971db351c7aa3d0cd973e72cbe4c359c51b57b451d27824bde571dbb622740506dc5d4d9436cd53509470f3e6b6858da01f5181c",
    "signer": "0xB4a54F9B2a7959bD50C623E17c29991fa049790a",
    "userId": "545537105"
  }
}