Note: Unnecessary use of -X or --request, POST is already inferred.
*   Trying 192.168.1.203...
* TCP_NODELAY set
* Connected to 192.168.1.203 (192.168.1.203) port 8008 (#0)
> POST /gds-seqexec/open-observation HTTP/1.1
> Host: 192.168.1.203:8008
> User-Agent: curl/7.61.1
> Accept: */*
> Content-Type: application/json
> Content-Length: 342
> 
* upload completely sent off: 342 out of 342 bytes
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