an api responds with this json object, please write python code to get all the challange imgs.
{"session_token":"86817966165352965.1276073005","challengeID":"825654ea5fda71c37.3598523505","challengeURL":"https:\/\/github-api.arkoselabs.com\/fc\/assets\/match-game-ui\/0.33.0\/standard\/index.html","audio_challenge_urls":null,"audio_game_rate_limited":null,"sec":30,"end_url":null,"game_data":{"display_fc_welldone":true,"final_challenge_text":"","customGUI":{"example_images":{"key":"https:\/\/github-api.arkoselabs.com\/cdn\/fc\/assets\/game4failureexamples\/3d_rollball\/3D_Rollball_animated_key_01.png","answer":"https:\/\/github-api.arkoselabs.com\/cdn\/fc\/assets\/game4failureexamples\/3d_rollball\/3D_Rollball_animated_answer_01.png"},"_challenge_imgs":["https:\/\/github-api.arkoselabs.com\/rtig\/image?challenge=0&sessionToken=86817966165352965.1276073005&gameToken=825654ea5fda71c37.3598523505","https:\/\/github-api.arkoselabs.com\/rtig\/image?challenge=1&sessionToken=86817966165352965.1276073005&gameToken=825654ea5fda71c37.3598523505","https:\/\/github-api.arkoselabs.com\/rtig\/image?challenge=2&sessionToken=86817966165352965.1276073005&gameToken=825654ea5fda71c37.3598523505"],"_final_chal_lang_key":"touch_done_info_colour","_disableFinalChalAfterSecChal":1,"watermark_not_for_public":0,"_final_ball":null,"_app_bg":"https:\/\/github-api.arkoselabs.com\/cdn\/fc\/assets\/graphics\/funcaptcha\/004\/white.png","_end_banner":"https:\/\/github-api.arkoselabs.com\/cdn\/fc\/assets\/graphics\/funcaptcha\/general\/fc_meta_solve_bg.jpg","audio_disabled":false},"waves":3,"instruction_string":"3d_rollball_animals","game_difficulty":6,"answer_width":200,"answer_height":200,"key_width":125,"key_height":200,"puzzle_name":"3d Rollball","feature_game4_at_availability":true,"gameType":4},"game_sid":"eu-west-1","sid":"eu-west-1","lang":"en","string_table_prefixes":["github_custom_instructions"],"string_table":{"meta.help":"Get answers to your questions","4.game_progress":"{{currentChallenge}} of {{numChallenges}}","4.key_image_annotation":"Match This!","meta.audio_info_play-3":"Press Play, type the number of the song that is the most sad, then press enter:","meta.text_info":"Enter the text you see:","meta.footer_general_info":"Play like humans do.","4.fail_info_timed_top":"That was not quite fast enough.","meta.audio_info_ctrl":"Press CTRL to play again.","4.key_image_annotation-3d_rollball_animals_multi":"icon and hand direction","meta.star_info":"Stars you have earned","meta.visual_version":"Change to a visual challenge","aria.tick_icon_alt":"Example for correct answer.","meta.audio_sending_answer":"Committing your answer. Please wait...","4.instructions-3d_rollball_animals_alt":"<strong>Use the arrows<\/strong> to <strong>rotate the animal<\/strong> to face <strong>where the hand is pointing.<\/strong>","4.hint-3d_rollball_animals_alt":"Make sure the animal is facing in the same direction that the hand is pointing towards.","game_meta.seconds":"seconds","meta.audio_play_again":"Play sound again","meta.audio_please_download_info":"Please download and listen to the sound, then type what you heard:","meta.audio_info":"Enter the numbers you hear:","meta.session_timeout":"The connection to a verification server was interrupted. Please <strong>refresh this page<\/strong> to try again.","meta.audio_info_play":"Press Play and type what you hear:","meta.footer_finished_info-1":"<p><strong>Verification complete!<\/strong><\/p><p>You've proven you're a human.<\/p><p>Continue your action.<\/p>","meta.footer_finished_info-3":"<b>Verification complete!<\/b><br>You've proven you're a human.<br>Continue your action.","github_custom_instructions-1.touch_button_info":"Touch the arrows,to roll the image","4.fail_button":"Try again","4.instructions-3d_rollball_animals":"<strong>Use the arrows<\/strong> to <strong>rotate the animal<\/strong> to face in the <strong>direction of the hand.<\/strong>","meta.audio_play_button":"Play","4.interstitial_progress_2":"{{currentChallenge}} of {{numChallenges}}","4.interstitial_progress_1":"{{currentChallenge}} done","aria.correct_image_alt":"Example for correct answer.","meta.audio_new_puzzle":"Start over with a different challenge","meta.html_verify_info":"Please prove you're not a spammer by doing this quick activity!","game_meta.game_great":"Great","meta.funcaptcha_website":"Open Arkose Labs website","aria.challenge_image_alt":"Image {{count}}.","github_custom_instructions_v2-3.intro_title":"Please solve this puzzle to verify that you are human","github_custom_instructions_v2-game_meta.landing_button":"Start puzzle","game_meta.verification":"Verification","aria.input_placeholder":"Type here...","meta.audio_sent_info":"Verification complete! You've proven you're a human. Continue your action.","meta.funcaptcha":"Arkose Labs","meta.reload_challenge":"Reload Challenge","aria.left_arrow":"Navigate to previous image","4.hint-3d_rollball_animals_arrow_2":"Make sure the animal is facing in the same direction that the arrow is pointing towards.","meta.generic_error":"Something went wrong. Please reload the challenge to try again.","aria.audio_challenge":"Audio challenge","meta.audio_disabled":"The audio challenge has been disabled. Please use the visual challenge, or contact the customer support team for assistance.","4.challenge_progress":"{{currentChallenge}} of {{numChallenges}}","meta.stars_link":"Stars","meta.api_timeout_error":"The connection to a verification server was interrupted. Please reload the challenge to try again. ","aria.right_arrow":"Navigate to next image","meta.audio_challenge_frame_title":"Audio challenge","aria.visual_challenge_describe":"Audio challenge is available below. Compatible with screen reader software.","meta.audio_version":"Change to an audio challenge","meta.audio_answer_input":"Challenge Answer","meta.audio_challenge":"Change to an audio challenge","meta.footer_patent":"Patent pending","4.submit_button":"Submit","game_meta.checking":"Checking","game_meta.game_good":"Good","aria.answer_field":"Answer field","4.hint":"Make sure to select an image that matches what you see in the example image.","meta.audio_verify_button":"Verify","meta.audio_play":"Play Sound","meta.audio_please_download_info-3":"Please download and listen to the sound, type the number of the song that is the most sad:","4.intro_title":"Verification","github_custom_instructions_v2-game_meta.landing_info":"Click \"Start puzzle\" to continue","4.hint-3d_rollball_animals_arrow":"Make sure the animal is facing in the same direction that the hand is pointing towards.","meta.audio_alert":"Please enter your answer into the input box.","meta.loading_info":"Working, please wait...","aria.audio_answer_input":"Challenge answer","meta.html_verify_button":"Verify","meta.meta_start_cta":"Start visual challenge","4.instructions-3d_rollball_animals_multi":"<strong>Use the arrows<\/strong> to <strong>rotate the animal with the same icon<\/strong> to face where the <strong>hand is pointing<\/strong>","meta.footer_general_info-1":"Please solve the puzzle.","game_meta.challenge":"Challenge {{count}}","4.instructions":"<strong>Press the arrows<\/strong> to see different images. When the image <strong>matches the example<\/strong> on the left, press Submit!","4.fail_info_timed_middle_hidden":"Try to answer before too much time runs out!","4.instructions-3d_rollball_animals_arrow_2":"Pick the image where the animal is facing in the same direction the arrow is pointing to","github_custom_instructions_v2-meta.html_verify_button":"Start puzzle","game_meta.not_for_public_watermark":"NOT FOR PRODUCTION USE","game_meta.interstitial_progress_1":"{{currentChallenge}} done","meta.funcaptcha_solved_phrase":"Verification challenge has been solved","4.instructions-3d_rollball_animals_arrow":"Pick the image where the animal is facing in the same direction the arrow is pointing to","github_custom_instructions_v2-game_meta.landing_heading":"Please solve this puzzle to verify that you are human","4.key_image_annotation-3d_rollball_animals":"Match this angle","game_meta.wait_text":"Please wait while we check your score.","aria.visual_challenge_label":"Visual challenge.","game_meta.landing_heading":"Protecting your account","meta.verification_complete":"Verification complete!","aria.cross_icon_alt":"Example for incorrect answer.","aria.wrong_image_alt":"Example for incorrect answer.","4.hint-3d_rollball_animals_multi":"Make sure the animal with the same icon above it as the left image, is facing in the same direction that the hand is pointing towards.","aria.restart_challenge":"Restarting challenge","meta.audio_rate_limit":"Use of the audio challenge for this user has been too high. Please try again.","meta.restart_label":"Restart","meta.audio_incorrect":"Incorrect, try again","4.hint-3d_rollball_animals":"Make sure the animal is facing in the same direction that the hand is pointing towards.","game_meta.landing_info":"Please solve this puzzle so we know you are a real person","4.fail_top":"That was not quite right.","game_meta.game_perfect":"Perfect","4.key_image_annotation-3d_rollball_animals_alt":"Match this angle","4.finish_message":"<b>Verification Complete<\/b> <br>You've proven you're a human. <br>Continue your action.","meta.audio_challenge_label":"Audio","github_custom_instructions-game_meta.landing_start":"Verify","meta.finished_info":"You've proven you're a human. Continue your action.","meta.footer_phone_mode_on":"This isn't working for me","game_meta.game_check":"Check!","meta.session_reset":"Your session was reset. Please try again.","game_meta.landing_button":"Verify","github_custom_instructions_v2-game_meta.landing_start":"Start puzzle","aria.visual_challenge":"Visual challenge. Audio challenge is available below, compatible with screen reader software.","meta.visual_challenge_label":"Visual","meta.visual_challenge_frame_title":"Visual challenge","game_meta.landing_start":"Start Puzzle","meta.audio_download":"Download Sound"},"earlyVictoryMessage":null,"font_size_adjustments":null,"style_theme":"default","dapib_url":"https:\/\/github-api.arkoselabs.com\/dapib\/eu-west-1\/ecc50ba2-07bb-4e09-adb4-8dfd2ce4eeae\/979.js?mac=v55w2KCF5XSIzVB3v28LB6F7gZlzt4A6Jm9kNQcco3o%3D&expiry=1699654918030"}