Quotes in secrets.yaml

Configuration
1

Dear HA community,

I’m using shell command to send RPC commands (https://community.shelly.cloud/topic/1793-walldisplay-list-for-useful-rpc-commands/) to my Shelly WallDisplay. In order to store my passwords in secrets.yaml, the only option was to include the whole command in secrets.yaml.

This is what worked so far for the RPC command http://IP_WD/rpc/Ui.Tap?x=300&y=600:

configuration.yaml:

shell_command:
  walldisplay_windfang_wakeup: !secret walldisplay_windfang_wakeup

secrets.yaml:

walldisplay_windfang_wakeup: "curl --digest -u admin:XXX 'http://192.168.XXX.XXX/rpc/Ui.Tap?x=1&y=1'"

However, I cannot handle the RPC command http://IP_WD/rpc/Ui.Screen.Set?params={"on":true} due to the additional “quotes”. All tried versions did not work:

secrets.yaml:

walldisplay_windfang_screen_on: 'curl --digest -u admin:XXX ''http://192.168.XXX.XXX/rpc/Ui.Screen.Set?params={"on":true}'''
walldisplay_windfang_screen_on2: "curl --digest -u admin:XXX 'http://192.168.XXX.XXX/rpc/Ui.Screen.Set?params={\"on\":true}'"
walldisplay_windfang_screen_on3: "curl --digest -u admin:XXX 'http://192.168.XXX.XXX/rpc/Ui.Screen.Set?params={''on'':true}'"

Feedback is

stdout: >-
  {"code":401,"message":"{\"auth_type\":\"digest\",\"nonce\":XXXXXXXXXX,\"nc\":\"1\",\"realm\":\"ShellyWallDisplay-XXXXXXXXXX\",\"algorithm\":\"SHA-256\"}"}
stderr: "% Total    % Received % Xferd  Average Speed   Time    Time     Time  Current\n                                 Dload  Upload   Total   Spent    Left  Speed\n\r  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0\r100   156  100   156    0     0   2823      0 --:--:-- --:--:-- --:--:--  2836\n\r100   156  100   156    0     0    907      0 --:--:-- --:--:-- --:--:--   907"
returncode: 0

for version 1 and

stdout: >-
  {"code":-103,"message":"Method Ui.Screen.Set failed: Missing required argument
  `on'!"}
stderr: "% Total    % Received % Xferd  Average Speed   Time    Time     Time  Current\n                                 Dload  Upload   Total   Spent    Left  Speed\n\r  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0\r100   156  100   156    0     0   4973      0 --:--:-- --:--:-- --:--:--  5032\n\r100    86  100    86    0     0    824      0 --:--:-- --:--:-- --:--:--   824"
returncode: 0

for versions 2 and 3.

Any ideas?

Thank you, a lot, in advance for helping me!