How can I get a number from user in telegram bot? - bash

Question

example
I want to make something like 'a button, when the user press this button A question will appear to him: Do you want to share your contact with the bot?,' I want like this using curl in bash script:
and I try like this, but it is doesn't working
#!/bin/bash
clear
token=""
old=$(curl -s "https://api.telegram.org/bot$token/getUpdates" | awk 'END{print}' | sed -n -e 's/^.*"date"://p' | cut -d ',' -f1)
while true; do
new=$(curl -s "https://api.telegram.org/bot$token/getUpdates" | awk 'END{print}')
if [[ "$new" =~ \"chat\"\:\{\"id\"\:([\-0-9]+)\, ]]; then
CHATID=${BASH_REMATCH[1]};
fi
if [[ "$new" =~ \"date\"\:([0-9]+)\, ]]; then
DATE=${BASH_REMATCH[1]};
fi
TEXT=$(echo "$new" | sed -n -e 's/^.*"text":"//p' | cut -d '"' -f1)
if ! [ "$DATE" = "$old" ]; then
echo "text: $TEXT, from: $USERNAME, id: $CHATID"
if [ "$TEXT" = "/start" ]; then
curl "https://api.telegram.org/bot$token/KeyboardButton?chat_id=$CHATID&text=flase&request_contact=true"
fi
old="$DATE"
fi
done
And error code is:
{"ok":false,"error_code":404,"description":"Not Found"}%
I try like this but It's now working how can I done this in right way?
https://i.stack.imgur.com/HQ8ga.jpg