Content Management API > Invitation 
 Invitation
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.
Object payload
  id   string   
 ID of invitation
 Example: 
 "312"
   type   string   
 Must be exactly "site_invitation".
  attributes.email   string   
  Example: 
 "mark.smith@example.com"
   attributes.expired   boolean   
 Whether this invitation has expired
 Example: 
 "mark.smith@example.com"
   attributes.invitation_link   null, string   
 The link to join a DatoCMS project. Shown only on creation and reset
 Example: 
 "https://dashboard.datocms.com/join-site?email=my-email%40datocms.comff&id=43796&preference=signup&token=xxx"