Regex function to look for a character just on part of the string - regex

Question

I need help to build a regex rule to find some [ on a text file.
Here is a sample of te text. It is a Json, but I can't use it as it is because of limitation of the program I'm using.
{
"event":[
"ONIMBOTMESSAGEADD"
],
"data[BOT][123][BOT_ID]":[
"123"
]
}
I need to find a regex that matches the line "data[BOT][123][BOT_ID]":[ and find all [ on it. The objectve is to replace it by an underscore so I would end up with something like this:
{
"event":[
"ONIMBOTMESSAGEADD"
],
"data_BOT_123_BOT_ID":[
"123"
]
}
I can't just remove all special characters because this would destroy the json structure.
I found a way to select each one of the lines that need to be corrected with the rule below, but I was not able to apply another rule over the result. I don't know how to do it.
pattern = (("data\[[a-zA-Z]+]\[[0-9]+]\[([a-zA-Z]+_[a-zA-Z]+)\]":\[)|("data\[[A-Z]+]\[([A-Z]+(_|)[A-Z]+)\]":\[)|("data\[[A-Z]+]\[([A-Z]+(_|)[A-Z]+(_|)[A-Z]+)\]":\[))
Any ideas on how to solve it? Thank you in advance.

Answer 1

Replacing weird data* key by only data:
jq '.["data"] = .[keys[0]] | del(.[keys[1]])' file
{
"event": [
"ONIMBOTMESSAGEADD"
],
"data": [
"123"
]
}