2315: Opt-in to preference

Update entity preference subscription status: Opt-in

Endpoint ID:	2315
Method:	PUT
URL:	/preferences/entity/id/{entityID}/preference/{preferenceID} /preferences/entity/ext-key/{ext-key}/{ext-type}/preference/{preferenceID}
	entityID	Rubiq master ID that uniquely identifies the entity
	ext-key	External key that uniquely identifies the entity
	ext-type	Type of external key
	preferenceID	A GUID string identifier for the preference
Request body:	None
Response body:	None
Status codes:	204	OK
	404	The entity or preference were not found. The following sub codes may be returned: `404.1` Entity not found `404.2` External entity reference not found `404.4` Preference not found

REST API