curl --request POST \
  --url https://api.promptmetrics.dev/auth/signup \
  --header 'Content-Type: application/json' \
  --data '
{
  "first_name": "<string>",
  "last_name": "<string>",
  "email": "[email protected]",
  "password": "<string>"
}
'

{
  "responseData": {
    "email": "<string>",
    "isVerified": true
  },
  "message": "<string>"
}