anchor.diff:      input: AddAssetToConsignmentSubmissionInput!
     ): AddAssetToConsignmentSubmissionPayload
   
  -  # Add a role to to User
  +  # Add a role associated with a user
     addUserRole(input: addUserRoleMutationInput!): addUserRoleMutationPayload
     addUserToSubmission(
       # Parameters for AddUserToSubmissionMutation
  
positive.code:   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
  
negative.code:     input: DeleteUserInterestMutationInput!
    ): DeleteUserInterestMutationPayload
  
    # Delete a role associated with a user
    deleteUserRole(
      input: deleteUserRoleMutationInput!
    ): deleteUserRoleMutationPayload
  