curl --location '/pictures///comments' \
--header 'Content-Type: application/json' \
--data '{
"content": "string"
}'{
"commentId": "string",
"author": "string",
"username": "string",
"displayName": "string",
"pfp": "string",
"content": "string",
"commentedAt": "2019-08-24T14:15:22.123Z"
}