W3Schools Tryit Editor

curl --location --request POST 'https://data.mongodb-api.com/app/data-kwisg/endpoint/data/v1/action/findOne' \
--header 'Content-Type: application/json' \
--header 'Access-Control-Request-Headers: *' \
--header 'api-key: 34nnLvQEz0zbuKFw5NVptpOmRlytpYVEoW88P65agChulU4quvjz9st8Rl3shkr4' \
--data-raw '{
 "dataSource":"Cluster0",
 "database":"sample_mflix",
 "collection":"movies",
 "projection": {"title": 1}
}'