{
  "manageEntity": {
    "action": "Create",
    "entityId": "187860351",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"playlist_id\":187860351,\"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": "0xfe57eba9bae6d4dea03b5b8c9b2b5d7ecf85d7a109fa4ce8b7ed3e608e4aa424",
    "signature": "0x1bfeffb07cc9f49192a167291d65b7c9d9622c606faa47492bd4e8ed8d36060857974ed7f2e206b9cb3db9a567953cd46efde56ebdef0098675f4239fac64e711c",
    "signer": "0x39b9f428c41489717f21E4BD8047647B53735281",
    "userId": "980027720"
  }
}