tried wks-keys and widevine_keys following https://forum.videohelp.com/threads/408187-Stuck-at-the-step-of-getting-the-key, but showing an error concerning 400.

I've got the mdp:
Code:
<?xml version="1.0"?>
<MPD mediaPresentationDuration="PT1H20M12.541S" minBufferTime="PT2.00S" profiles="urn:mpeg:dash:profile:isoff-on-demand:2011" type="static" xmlns="urn:mpeg:dash:schema:mpd:2011" xmlns:cenc="urn:mpeg:cenc:2013" xmlns:mspr="urn:microsoft:playready">
  <Period>
    <AdaptationSet maxHeight="720" maxWidth="1280" mimeType="video/mp4" minHeight="180" minWidth="320" segmentAlignment="true" startWithSAP="1">
      <ContentProtection cenc:default_KID="8e1484d8-f891-4113-b379-b3c61881a1d2" schemeIdUri="urn:mpeg:dash:mp4protection:2011" value="cenc"/>
      <ContentProtection schemeIdUri="urn:uuid:9a04f079-9840-4286-ab92-e65be0885f95">
        <mspr:pro>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</mspr:pro>
      </ContentProtection>
      <ContentProtection schemeIdUri="urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed">
        <cenc:pssh>AAAAjHBzc2gAAAAA7e+LqXnWSs6jyCfc1R0h7QAAAGwIARIQjhSE2PiRQROzebPGGIGh0iJPeyJ2ZW5kb3JfY29kZSI6Im1nc3RhZ2UiLCJwcm9kdWN0X2NvZGUiOiI4ZTE0ODRkOC1mODkxLTQxMTMtYjM3OS1iM2M2MTg4MWExZDIifSoFU0RfSEQ=</cenc:pssh>
      </ContentProtection>
      <Representation bandwidth="6000000" codecs="avc1.4D4020" frameRate="2899381/96742" height="720" id="video-avc1-1" scanType="progressive" width="1280">
        <BaseURL>https://dash-streaming.mgstage.com/streaming/nanpatv/200gana/2197/200gana-2197_6000.mp4?Policy=eyJTdGF0ZW1lbnQiOlt7IlJlc291cmNlIjoiaHR0cHM6Ly9kYXNoLXN0cmVhbWluZy5tZ3N0YWdlLmNvbS9zdHJlYW1pbmcvbmFucGF0di8yMDBnYW5hLzIxOTcvKiIsIkNvbmRpdGlvbiI6eyJEYXRlTGVzc1RoYW4iOnsiQVdTOkVwb2NoVGltZSI6MTcwNTE1NDczOX19fV19&amp;Signature=SdS2kmjv9Nbit9H41-0zDui0ZbR23KxSJ-67pv2IJFTFx6APSTqEwRCA%7E12Ns0B3aFUzltgUnmkRDF8T9lVMThfrNE6DRO-FdA29CBeXZt6QRLYzQlyC2JNfj7GLswbav7WB2EZnXd9Y2fNdnEy-cCrUZozLStMVDmm%7ENJ-askhQ66KKm68ersDKbfhNHHepS%7E3UMikO%7Edn9n5iWQuz1OBSeMt%7E0cbHa0fx6TPqE053FV9A3yUssh1rG7AIh2ZN%7E18i2mz5n1ZEA0tignK9VUhK4GhT%7EgWm9eJp8T4m94sSazkT1D84fO0qT8oDsSUz2bLCu2oNf4nvKibC01jAauw__&amp;Key-Pair-Id=APKAIAJDTQKKKUZNBLPQ</BaseURL>
        <SegmentBase indexRange="1825-30704">
          <Initialization range="0-1824"/>
        </SegmentBase>
      </Representation>
      <Representation bandwidth="4000000" codecs="avc1.4D401F" frameRate="2899381/96742" height="540" id="video-avc1-2" scanType="progressive" width="960">
        <BaseURL>https://dash-streaming.mgstage.com/streaming/nanpatv/200gana/2197/200gana-2197_4000.mp4?Policy=eyJTdGF0ZW1lbnQiOlt7IlJlc291cmNlIjoiaHR0cHM6Ly9kYXNoLXN0cmVhbWluZy5tZ3N0YWdlLmNvbS9zdHJlYW1pbmcvbmFucGF0di8yMDBnYW5hLzIxOTcvKiIsIkNvbmRpdGlvbiI6eyJEYXRlTGVzc1RoYW4iOnsiQVdTOkVwb2NoVGltZSI6MTcwNTE1NDczOX19fV19&amp;Signature=SdS2kmjv9Nbit9H41-0zDui0ZbR23KxSJ-67pv2IJFTFx6APSTqEwRCA%7E12Ns0B3aFUzltgUnmkRDF8T9lVMThfrNE6DRO-FdA29CBeXZt6QRLYzQlyC2JNfj7GLswbav7WB2EZnXd9Y2fNdnEy-cCrUZozLStMVDmm%7ENJ-askhQ66KKm68ersDKbfhNHHepS%7E3UMikO%7Edn9n5iWQuz1OBSeMt%7E0cbHa0fx6TPqE053FV9A3yUssh1rG7AIh2ZN%7E18i2mz5n1ZEA0tignK9VUhK4GhT%7EgWm9eJp8T4m94sSazkT1D84fO0qT8oDsSUz2bLCu2oNf4nvKibC01jAauw__&amp;Key-Pair-Id=APKAIAJDTQKKKUZNBLPQ</BaseURL>
        <SegmentBase indexRange="1826-30705">
          <Initialization range="0-1825"/>
        </SegmentBase>
      </Representation>
      <Representation bandwidth="1000000" codecs="avc1.4D401F" frameRate="2899381/96742" height="480" id="video-avc1-3" scanType="progressive" width="852">
        <BaseURL>https://dash-streaming.mgstage.com/streaming/nanpatv/200gana/2197/200gana-2197_1000.mp4?Policy=eyJTdGF0ZW1lbnQiOlt7IlJlc291cmNlIjoiaHR0cHM6Ly9kYXNoLXN0cmVhbWluZy5tZ3N0YWdlLmNvbS9zdHJlYW1pbmcvbmFucGF0di8yMDBnYW5hLzIxOTcvKiIsIkNvbmRpdGlvbiI6eyJEYXRlTGVzc1RoYW4iOnsiQVdTOkVwb2NoVGltZSI6MTcwNTE1NDczOX19fV19&amp;Signature=SdS2kmjv9Nbit9H41-0zDui0ZbR23KxSJ-67pv2IJFTFx6APSTqEwRCA%7E12Ns0B3aFUzltgUnmkRDF8T9lVMThfrNE6DRO-FdA29CBeXZt6QRLYzQlyC2JNfj7GLswbav7WB2EZnXd9Y2fNdnEy-cCrUZozLStMVDmm%7ENJ-askhQ66KKm68ersDKbfhNHHepS%7E3UMikO%7Edn9n5iWQuz1OBSeMt%7E0cbHa0fx6TPqE053FV9A3yUssh1rG7AIh2ZN%7E18i2mz5n1ZEA0tignK9VUhK4GhT%7EgWm9eJp8T4m94sSazkT1D84fO0qT8oDsSUz2bLCu2oNf4nvKibC01jAauw__&amp;Key-Pair-Id=APKAIAJDTQKKKUZNBLPQ</BaseURL>
        <SegmentBase indexRange="1825-30704">
          <Initialization range="0-1824"/>
        </SegmentBase>
      </Representation>
      <Representation bandwidth="750000" codecs="avc1.4D401E" frameRate="2899381/96742" height="404" id="video-avc1-4" scanType="progressive" width="716">
        <BaseURL>https://dash-streaming.mgstage.com/streaming/nanpatv/200gana/2197/200gana-2197_750.mp4?Policy=eyJTdGF0ZW1lbnQiOlt7IlJlc291cmNlIjoiaHR0cHM6Ly9kYXNoLXN0cmVhbWluZy5tZ3N0YWdlLmNvbS9zdHJlYW1pbmcvbmFucGF0di8yMDBnYW5hLzIxOTcvKiIsIkNvbmRpdGlvbiI6eyJEYXRlTGVzc1RoYW4iOnsiQVdTOkVwb2NoVGltZSI6MTcwNTE1NDczOX19fV19&amp;Signature=SdS2kmjv9Nbit9H41-0zDui0ZbR23KxSJ-67pv2IJFTFx6APSTqEwRCA%7E12Ns0B3aFUzltgUnmkRDF8T9lVMThfrNE6DRO-FdA29CBeXZt6QRLYzQlyC2JNfj7GLswbav7WB2EZnXd9Y2fNdnEy-cCrUZozLStMVDmm%7ENJ-askhQ66KKm68ersDKbfhNHHepS%7E3UMikO%7Edn9n5iWQuz1OBSeMt%7E0cbHa0fx6TPqE053FV9A3yUssh1rG7AIh2ZN%7E18i2mz5n1ZEA0tignK9VUhK4GhT%7EgWm9eJp8T4m94sSazkT1D84fO0qT8oDsSUz2bLCu2oNf4nvKibC01jAauw__&amp;Key-Pair-Id=APKAIAJDTQKKKUZNBLPQ</BaseURL>
        <SegmentBase indexRange="1825-30704">
          <Initialization range="0-1824"/>
        </SegmentBase>
      </Representation>
      <Representation bandwidth="500000" codecs="avc1.4D401E" frameRate="2899381/96742" height="316" id="video-avc1-5" scanType="progressive" width="560">
        <BaseURL>https://dash-streaming.mgstage.com/streaming/nanpatv/200gana/2197/200gana-2197_500.mp4?Policy=eyJTdGF0ZW1lbnQiOlt7IlJlc291cmNlIjoiaHR0cHM6Ly9kYXNoLXN0cmVhbWluZy5tZ3N0YWdlLmNvbS9zdHJlYW1pbmcvbmFucGF0di8yMDBnYW5hLzIxOTcvKiIsIkNvbmRpdGlvbiI6eyJEYXRlTGVzc1RoYW4iOnsiQVdTOkVwb2NoVGltZSI6MTcwNTE1NDczOX19fV19&amp;Signature=SdS2kmjv9Nbit9H41-0zDui0ZbR23KxSJ-67pv2IJFTFx6APSTqEwRCA%7E12Ns0B3aFUzltgUnmkRDF8T9lVMThfrNE6DRO-FdA29CBeXZt6QRLYzQlyC2JNfj7GLswbav7WB2EZnXd9Y2fNdnEy-cCrUZozLStMVDmm%7ENJ-askhQ66KKm68ersDKbfhNHHepS%7E3UMikO%7Edn9n5iWQuz1OBSeMt%7E0cbHa0fx6TPqE053FV9A3yUssh1rG7AIh2ZN%7E18i2mz5n1ZEA0tignK9VUhK4GhT%7EgWm9eJp8T4m94sSazkT1D84fO0qT8oDsSUz2bLCu2oNf4nvKibC01jAauw__&amp;Key-Pair-Id=APKAIAJDTQKKKUZNBLPQ</BaseURL>
        <SegmentBase indexRange="1825-30704">
          <Initialization range="0-1824"/>
        </SegmentBase>
      </Representation>
      <Representation bandwidth="300000" codecs="avc1.4D400D" frameRate="2899381/96742" height="180" id="video-avc1-6" scanType="progressive" width="320">
        <BaseURL>https://dash-streaming.mgstage.com/streaming/nanpatv/200gana/2197/200gana-2197_300.mp4?Policy=eyJTdGF0ZW1lbnQiOlt7IlJlc291cmNlIjoiaHR0cHM6Ly9kYXNoLXN0cmVhbWluZy5tZ3N0YWdlLmNvbS9zdHJlYW1pbmcvbmFucGF0di8yMDBnYW5hLzIxOTcvKiIsIkNvbmRpdGlvbiI6eyJEYXRlTGVzc1RoYW4iOnsiQVdTOkVwb2NoVGltZSI6MTcwNTE1NDczOX19fV19&amp;Signature=SdS2kmjv9Nbit9H41-0zDui0ZbR23KxSJ-67pv2IJFTFx6APSTqEwRCA%7E12Ns0B3aFUzltgUnmkRDF8T9lVMThfrNE6DRO-FdA29CBeXZt6QRLYzQlyC2JNfj7GLswbav7WB2EZnXd9Y2fNdnEy-cCrUZozLStMVDmm%7ENJ-askhQ66KKm68ersDKbfhNHHepS%7E3UMikO%7Edn9n5iWQuz1OBSeMt%7E0cbHa0fx6TPqE053FV9A3yUssh1rG7AIh2ZN%7E18i2mz5n1ZEA0tignK9VUhK4GhT%7EgWm9eJp8T4m94sSazkT1D84fO0qT8oDsSUz2bLCu2oNf4nvKibC01jAauw__&amp;Key-Pair-Id=APKAIAJDTQKKKUZNBLPQ</BaseURL>
        <SegmentBase indexRange="1824-30703">
          <Initialization range="0-1823"/>
        </SegmentBase>
      </Representation>
    </AdaptationSet>
    <AdaptationSet mimeType="audio/mp4" segmentAlignment="true" startWithSAP="1">
      <ContentProtection cenc:default_KID="8e1484d8-f891-4113-b379-b3c61881a1d2" schemeIdUri="urn:mpeg:dash:mp4protection:2011" value="cenc"/>
      <ContentProtection schemeIdUri="urn:uuid:9a04f079-9840-4286-ab92-e65be0885f95">
        <mspr:pro>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</mspr:pro>
      </ContentProtection>
      <ContentProtection schemeIdUri="urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed">
        <cenc:pssh>AAAAjHBzc2gAAAAA7e+LqXnWSs6jyCfc1R0h7QAAAGwIARIQjhSE2PiRQROzebPGGIGh0iJPeyJ2ZW5kb3JfY29kZSI6Im1nc3RhZ2UiLCJwcm9kdWN0X2NvZGUiOiI4ZTE0ODRkOC1mODkxLTQxMTMtYjM3OS1iM2M2MTg4MWExZDIifSoFU0RfSEQ=</cenc:pssh>
      </ContentProtection>
      <Representation audioSamplingRate="44100" bandwidth="262681" codecs="mp4a.40.2" id="audio-und-mp4a">
        <AudioChannelConfiguration schemeIdUri="urn:mpeg:dash:23003:3:audio_channel_configuration:2011" value="2"/>
        <BaseURL>https://dash-streaming.mgstage.com/streaming/nanpatv/200gana/2197/200gana-2197_audio.mp4?Policy=eyJTdGF0ZW1lbnQiOlt7IlJlc291cmNlIjoiaHR0cHM6Ly9kYXNoLXN0cmVhbWluZy5tZ3N0YWdlLmNvbS9zdHJlYW1pbmcvbmFucGF0di8yMDBnYW5hLzIxOTcvKiIsIkNvbmRpdGlvbiI6eyJEYXRlTGVzc1RoYW4iOnsiQVdTOkVwb2NoVGltZSI6MTcwNTE1NDczOX19fV19&amp;Signature=SdS2kmjv9Nbit9H41-0zDui0ZbR23KxSJ-67pv2IJFTFx6APSTqEwRCA%7E12Ns0B3aFUzltgUnmkRDF8T9lVMThfrNE6DRO-FdA29CBeXZt6QRLYzQlyC2JNfj7GLswbav7WB2EZnXd9Y2fNdnEy-cCrUZozLStMVDmm%7ENJ-askhQ66KKm68ersDKbfhNHHepS%7E3UMikO%7Edn9n5iWQuz1OBSeMt%7E0cbHa0fx6TPqE053FV9A3yUssh1rG7AIh2ZN%7E18i2mz5n1ZEA0tignK9VUhK4GhT%7EgWm9eJp8T4m94sSazkT1D84fO0qT8oDsSUz2bLCu2oNf4nvKibC01jAauw__&amp;Key-Pair-Id=APKAIAJDTQKKKUZNBLPQ</BaseURL>
        <SegmentBase indexRange="1680-30583">
          <Initialization range="0-1679"/>
        </SegmentBase>
      </Representation>
    </AdaptationSet>
  </Period>
</MPD>
I've used the license url: https://cenc.webstream.ne.jp/drmapi/wv/mgstage?custom_data=eyJhdXRoX3Rva2VuIjoie1wicGx...ZiNWIxZVwifSJ9

Could anyone give me a hand with this problem?