JSON-LD Schema SearchAction

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#1

Hello,
Does anybody implement the schema.org specification for search to include in json-ld for example.

			"potentialAction": [
				{
					"@type": "SearchAction",
					"target": {
						"@type": "EntryPoint",
						"urlTemplate": ""
					},
					"query-input": ""
				}
			]

Trying to establish what we need for urlTemplate property ?
Thanks
Paul