{
test: {
   a1: {
       b1: "someText"
   },
   a2:2,
},
test2:{
   a3:3,
   a4:{
       "b4": "otherText",
       "b5": "textText"
   }}
}

{
  test_a1_b1: 'someText',
  test_a2: 2,
  test2_a3: 3,
  test2_a4_b4: 'otherText',
  test2_a4_b5: 'texttext'
}