Assign a user to an email as long as the user is not currently assigned to one, with validation to prevent duplicate email associations.
Your API key for Rhombus.
Authentication scheme indicator ("api-token").
9Request object for assigning an email to a user.
Email address to assign to the user
base 64 (url-safe) uuid string
"AAAAAAAAAAAAAAAAAAAAAA"
OK
Response object for assigning an email to a user.