curl --request PUT \
  --url https://crypto.westminister.tech/api/v1/auth/user/id/{id}/role \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "role": "vendor"
}
'

{
  "id": "8d09359f-325a-4ecf-998d-dbe5eda3a498",
  "email": "michael.ochieng@gmail.com",
  "phone_number": "+254708374149",
  "first_name": "Michael",
  "last_name": "Juma",
  "role": "customer",
  "kyc_status": "pending"
}