bulk update several campaigns cpc bid in one api command?

What is the write way to update several campaigns cpc bid in one api command?
I am writing it wrong as I do not know coding but I will appreciate a right code for this idea

{
"campaigns": [
27024300
],
"update": {
"cpc": 0.01,
"is_active": true
}
};
{
"campaigns": [
26986128
],
"update": {
"cpc": 0.03,
"is_active": true
}
}
--- end of code

I am using Postman software
Any other solution to upload like csv file like this

27024300:0.01
26986128:0.03

it will be better?

Thanks in advance