Invites a user

curl --request POST \
  --url https://{hostname}.gable.ai/v0/settings/users \
  --header 'Content-Type: application/json' \
  --header 'X-API-KEY: <api-key>' \
  --data '{
  "email": "<string>",
  "firstName": "<string>",
  "lastName": "<string>",
  "resendInvite": true,
  "role": "ADMIN"
}'

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