How to check I am receiving correct data from teltonika dual cam?

Hello all, I have received a request from teltonika dual cam like this:0000000500013ee13c00198144000400, When I decoded it I got that photo rear available then I am sending request like this:0x000800072570686F746F66.

I got data from device like this: 0000000500013ee13c0019814400040000010006000000200000
and it is just increasing by 20 everytime
I am very confused how to process it further, please help asap

Please help me to troubleshoot this problem asap.