A DatoCMS administrative area can be accessed by multiple people. Every invitation is linked to a specific Role, which describes what actions it will be able to perform once the user will register.
ID of invitation
"312"
Must be exactly "site_invitation".
"mark.smith@example.com"
Whether this invitation has expired
"mark.smith@example.com"
The link to join a DatoCMS project. Shown only on creation and reset
"https://dashboard.datocms.com/join-site?email=my-email%40datocms.comff&id=43796&preference=signup&token=xxx"