Creates a new individual Lemonway account for onboarding a new user. If the individual already has a Lemonway account but requires full onboarding, use POST /onboardings/individual and provide the user’s unique accountId.

The is call estially validates you’ve provided all required bodyParams.

• Creates an account record of type “individual.”

• Associate a new wallet entry using the walletId.

• Returns a populated account object (including an assigned Id) so you can pass it into subsequent onboarding calls.