check_http how could you send the parameters of a form-data

[fgaadmin]

The next scan is being attempted.

/usr/local/nagios/libexec/check_http -H api.fga.com.co -u /garantiaServicios/oauth/token -k "Content-Type:application/x-www-form-urlencoded" -j 'POST' -P '{"grant_type":"password","username":"admin","password":"password"}' --authorization=User:password -t 3 -e 200 -p 443 -v -S

OST /garantiaServicios/oauth/token HTTP/1.1
User-Agent: check_http/v2.2.1 (nagios-plugins 2.2.1)
Connection: close
Host: api.fga.com.co
Accept: */*
Content-Type:application/x-www-form-urlencoded
Authorization: Basic VXNlcjpVc2dfdsafafce
Content-Type: application/x-www-form-urlencoded
Content-Length: 191

{"grant_type":"password","admin":"admin","password":"password"}

https://api.fga.com.co:443/garantiaServ ... auth/token is 597 characters
STATUS: HTTP/1.1 401
**** HEADER ****
WWW-Authenticate: Basic realm="oauth2/client"
X-Content-Type-Options: nosniff
X-XSS-Protection: 1; mode=block
Cache-Control: no-cache, no-store, max-age=0, must-revalidate
Pragma: no-cache
Expires: 0
Strict-Transport-Security: max-age=31536000 ; includeSubDomains
X-Frame-Options: DENY
Content-Type: application/json;charset=UTF-8
Transfer-Encoding: chunked
Date: Wed, 20 Nov 2019 22:08:07 GMT
Connection: close
**** CONTENT ****
{"timestamp":"2019-11-20T17:08:07.922-0500","status":401,"error":"Unauthorized", "message":"Unauthorized","path":"/garantiaServicios/oauth/token"}
HTTP CRITICAL - Invalid HTTP response received from host on port 443: HTTP/1.1 4 01
HTTP/1.1 401 - You have new mail in /var/spool/mail/root

how could you send the parameters of a form-data for post method

[ssax]

Are you checking a site that uses AzureAD or some other auth provider?