curl --location --request PUT 'https://api.victorops.com//api-public/v1/overrides//assignments/' \
--header 'X-VO-Api-Id;' \
--header 'X-VO-Api-Key;' \
--header 'Content-Type: application/json' \
--data-raw '{
"policy": "string",
"username": "string"
}'
{
"_selfUrl": "string",
"assigned": true,
"policy": "string",
"team": "string",
"user": "string"
}