{
"email": "user@example.com",
"password": "string",
"is_admin": true,
"invite_code": "string"
}curl --location --request POST '/user/signup' \
--header 'Content-Type: application/json' \
--data-raw '{
"email": "user@example.com",
"password": "string",
"is_admin": true,
"invite_code": "string"
}'null