Build Classic ASP VB script page to support JSON posts

I need a classic ASP page written with VB script code that will act as a JSON rest API web service. This ASP page will be hosted on a Windows server running IIS 7.5. This page will accept JSON Posts from "the thing's network" I need you to write the logic that will parse the JSON header to extract the variables and values. I will write the code to insert these values in a database. The JSON post will be in the following format: { "app_id": "my-app-id", // Same as in the topic "dev_id": "my-dev-id", // Same as in the topic "hardware_serial": "0102030405060708", // In case of LoRaWAN: the DevEUI "port": 1, // LoRaWAN FPort "counter": 2, // LoRaWAN frame counter "is_retry": false, // Is set to true if this message is a retry (you could also detect this from the counter) "confirmed": false, // Is set to true if this message was a confirmed message "payload_raw": "AQIDBA==", // Base64 encoded payload: [0x01, 0x02, 0x03, 0x04] "payload_fields": {}, // Object containing the results from the payload functions - left out when empty "metadata": { "time": "1970-01-01T00:00:00Z", // Time when the server received the message "frequency": 868.1, // Frequency at which the message was sent "modulation": "LORA", // Modulation that was used - LORA or FSK "data_rate": "SF7BW125", // Data rate that was used - if LORA modulation "bit_rate": 50000, // Bit rate that was used - if FSK modulation "coding_rate": "4/5", // Coding rate that was used "gateways": [ { "gtw_id": "ttn-herengracht-ams", // EUI of the gateway "timestamp": 12345, // Timestamp when the gateway received the message "time": "1970-01-01T00:00:00Z", // Time when the gateway received the message - left out when gateway does not have synchronized time "channel": 0, // Channel where the gateway received the message "rssi": -25, // Signal strength of the received message "snr": 5, // Signal to noise ratio of the received message "rf_chain": 0, // RF chain where the gateway received the message "latitude": 52.1234, // Latitude of the gateway reported in its status updates "longitude": 6.1234, // Longitude of the gateway "altitude": 6 // Altitude of the gateway }, //...more if received by more gateways... ], "latitude": 52.2345, // Latitude of the device "longitude": 6.2345, // Longitude of the device "altitude": 2 // Altitude of the device }, "downlink_url": "[login to view URL]" }