toJson method
Implementation
Map<String, dynamic> toJson() => {
"network_identifier": network_identifier.toJson(),
"account_identifier": account_identifier.toJson(),
"block_identifier": block_identifier?.toJson(),
"currencies": currencies?.map((e) => e.toJson()).toList()
}..removeWhere(
(dynamic key, dynamic value) => key == null || value == null);