anchor.diff:  
     # A unique identifier for the client performing the mutation.
     clientMutationId: String
  +}
  +
  +input addUserRoleMutationInput {
  +  clientMutationId: String
  +  id: String!
  +  role: String!
  +}
  +
  +type addUserRoleMutationPayload {
  +  clientMutationId: String
  +
  +  # On success: the updated user roles
  +  roles: [String]!
   }
   
   # Autogenerated input type of AddUserToSubmissionMutation
  
positive.code:   userAddressOrErrors: UserAddressOrErrorsUnion!
  }
  
  input CreateUserInterestMutationInput {
    anonymousSessionId: String
  
  
negative.code:   clientMutationId: String
    me: Me!
    userInterest: UserInterest!
  }
  
  input deleteUserRoleMutationInput {
    clientMutationId: String
    id: String!
    role: String!
  }
  
  type deleteUserRoleMutationPayload {
    clientMutationId: String
  
    # On success: the updated user roles
    roles: [String]!
  }
  
  # Autogenerated input type of DeleteViewingRoom
  