Remote Network Reset via iOS Application with BLE communication

I am working on implementation of ZigBee Remote Network Reset feature on our iOS Application but I am facing blockers to Authenticate & Write Frame on the XBee3 devices.
I have tried multiple frame sending but device not reflecting or giving proper response after writing.
I have a passkey but not able to figure-out proper payload to send.
Can you please guide me?

I would suggest looking at the code used for the Digi Mobile application https://hub.digi.com/support/products/digi-xbee-mobile-sdk/