curl -X PUT https://api.box.com/2.0/metadata_templates/enterprise/blueprintTemplate/schema \
     -H 'Authorization: Bearer <ACCESS_TOKEN>" '
     -H 'Content-Type: application/json" '
     -d '[
       {
         "op": "editField",
         "fieldKey": "category",
         "data": {
           "displayName": "Customer Group"
         }
       }
     ]'

var updates = new List<BoxMetadataTemplateUpdate>()
{
    new BoxMetadataTemplateUpdate()
    {
        Op = MetadataTemplateUpdateOp.addEnumOption,
        FieldKey = "fy",
        Data = new {
            key = "FY20"
        }
    },
    new BoxMetadataTemplateUpdate()
    {
        Op = MetadataTemplateUpdateOp.editTemplate,
        Data = new {
            hidden = false
        }
    }
};
BoxMetadataTemplate updatedTemplate = await client.MetadataManager
    .UpdateMetadataTemplate(updates, "enterprise", "marketingCollateral");

List<MetadataTemplate.FieldOperation> updates = new ArrayList<MetadataTemplate.FieldOperation>();

String addCategoryFieldJSON = "{\"op\":\"addField\","\"data\":{"
    + "\"displayName\":\"Category\",\"key\":\"category\",\"hidden\":false,\"type\":\"string\"}}";
updates.add(new MetadataTemplate.FieldOperation(addCategoryFieldJSON));

String changeTemplateNameJSON = "{\"op\":\"editTemplate\",\"data\":{"
    + "\"displayName\":\"My Metadata\"}}";
updates.add(new MetadataTemplate.FieldOperation(changeTemplateNameJSON));

MetadataTemplate.updateMetadataTemplate(api, "enterprise", "myData", updates);

template = client.metadata_template('enterprise', 'employeeRecord')
updates = template.start_update()
updates.add_enum_option('state', 'WI')
updates.edit_template({'hidden': False})
updated_template = template.update_info(updates)

// Add a new option to the Fiscal Year field, and un-hide the template
var operations = [
	{
		op: 'addEnumOption',
		fieldKey: 'fy',
		data: { key: 'FY20' }
	},
	{
		op: 'editTemplate',
		data: { hidden: false }
	}
];
client.metadata.updateTemplate('enterprise', 'vcontract', operations)
	.then(template => {
		/* template -> {
			templateKey: 'vcontract',
			scope: 'enterprise_12345',
			displayName: 'Vendor Contract',
			hidden: false,
			fields: 
			[ { type: 'date',
				key: 'signed',
				displayName: 'Date Signed',
				hidden: false },
				{ type: 'string',
				key: 'vendor',
				displayName: 'Vendor',
				hidden: false },
				{ type: 'enum',
				key: 'fy',
				displayName: 'Fiscal Year',
				options: 
					[ { key: 'FY17' },
					{ key: 'FY18' },
					{ key: 'FY19' },
					{ key: 'FY20' } ],
				hidden: false } ] }
		*/
	});

client.metadata.updateTemplate(
    scope: "enterprise",
    templateKey: "personnelRecord",
    operation: .reorderEnumOptions(fieldKey: "department", enumOptionKeys: ["Marketing", "Sales", "HR"])
) { (result: Result<MetadataTemplate, BoxSDKError>) in
    guard case let .success(template) = result {
        print("Error updating metadata template")
        return
    }

    print("Updated metadata template with ID \(template.id)")
}