Training Error on object detector model

Hi, I need assistance with object detector model, which I am trying to create using ml. After a lot of trial-and-error, I made a annotation.json format. However, now I have an error on the code I wrote json. Below is the code and then error message:
[{“image”:“orange_1.jpg”,

 "annotations":[  

 {"label":"orange","coordinates":{"y":1132,"x":781,"width":413,"height":394}},  
 {"label":"orange","coordinates":{"y":1167,"x":308,"width":397,"height":375}}  
  ]  
 }  

]
Training Error. Unexpected JPEG decode failure.

Hey there!
That is not the JSON format
I this link you will find the correct way