{
  "manageEntity": {
    "action": "Create",
    "entityId": "1400989188",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"playlist_id\":1400989188,\"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": "0x203716e928e8230be40aede93e9a86ba89d76bd48b9bcb421885bf9496c1d7d5",
    "signature": "0x64772b05aa2319157e02fec92138aac73af64c5aa8753864374e3c50a99463895a6477a661a3f1891df2861aeedea00a4b30ec51131c65654f5e245e8f8022541c",
    "signer": "0xE5439a0580b68F2058cCbdB27461859c63B3C9C1",
    "userId": "30403219"
  }
}