https://developer.apple.com/documentation/walletpasses/showi...,

    {
    ...

    
    "locations" : [
        {"latitude" : 37.3229, "longitude" : -122.0323},
        {"latitude" : 37.3286, "longitude" : -122.0143},
        {
            "altitude" : 10.0,
            "latitude" : 37.331,
            "longitude" : -122.029,
            "relevantText" : "Store nearby on 3rd and Main."
        }
    ],
    "relevantDate" : "2014-12-05T09:00-08:00"
    }