I have value response_data which stores this data:
{"response_data"=>
{"transaction_type"=>"void",
"status"=>"error",
"unique_id"=>"ec8b1e786efe64f667ad19ff1b39fb92",
"transaction_id"=>"kcyplptlpk966yifmuct6jj0od",
"code"=>"410",
"technical_message"=>"no approved reference transaction found",
"message"=>"Something went wrong, please contact support!",
"mode"=>"test",
"timestamp"=>"2017-11-24T08:07:40Z",
"descriptor"=>"rwgwg",
"sent_to_acquirer"=>"false"}}
How I can get the keys from this structure?
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