Arduino JSON parsing problem

I have a problem parsing JSON objects. I am using this lib: GitHub - arduino-libraries/Arduino_JSON: Official JSON Library for Arduino

I have this array
{"12":"50","13":"0","14":"100","4":"0","101":"6000"}

String payloadJSON = {"12":"50","13":"0","14":"100","4":"0","101":"6000"}
JSONVar myObject = JSON.parse(payloadJSON);
Serial.println(myObject);

I get this:
{"12":"50","13":"0","14":"100","4":"0","15":"0"}

What am I doing wrong?

This is not an array!

You are printing the object, so the ouptut it's exactly as it should be.

Which data do you need to get from the JSON string?

My bad. Sry.

I obviously wasn't clear enough. There is a difference between payloadJSON and myObject. It is missing the last "101":"6000".

You're right, I did'nt noticed that difference in output in your post.

Aniway, trying to simulate I can't reproduce your issue so maybe it's better if you copy & paste the complete sketch.

I can't reproduce it either. It works fine for me.
What HW Board are you using?