Bigquery one json data into bigquery table with elegant SQL

I have a bigquery table containing the below data(one column and one row)

Bigquery one json data into bigquery table with elegant SQL

I have a bigquery table containing the below data(one column and one row)

Bigquery one json data into bigquery table with elegant SQL

I have a bigquery table containing the below data(one column and one row)

Bigquery one json data into bigquery table with elegant SQL

I have a bigquery table containing the below data(one column and one row)

Bigquery one json data into bigquery table with elegant SQL

I have a bigquery table containing the below data(one column and one row)

Bigquery one json data into bigquery table with elegant SQL

I have a bigquery table containing the below data(one column and one row)

Bigquery one json data into bigquery table with elegant SQL

I have a bigquery table containing the below data(one column and one row)

Bigquery one json data into bigquery table with elegant SQL

I have a bigquery table containing the below data(one column and one row)

Bigquery one json data into bigquery table with elegant SQL

I have a bigquery table containing the below data(one column and one row)

How to Access key and object of json data using Big Query(SQL)

**i have this table which has this json structure **