ghe-manage-v1-set-the-status-of-maintenance-mode.sh fails

[gm3dmo]

./ghe-manage-v1-set-the-status-of-maintenance-mode.sh 
json file being submitted:

{
  "enabled": false
}
+ curl -L --no-progress-meter --fail-with-body -u api_key:v69tB1pQi https://gm3dmo-02627d2db68dd8a39.ghe-test.net:8443/manage/v1/maintenance --data @tmp/set-the-status-of-maintenance-mode.json
{"error":{"message":"invalid json request body","request_id":"77fccdcc-0fed-49e9-8ada-bdd5592b022b"}}
curl: (22) The requested URL returned error: 400