thread:
  author: A
logs:
  - id: A.1
    identity: A
    records:
      - id: A.1.1
        aclSnapshot:
          userStates:
            - identity: A
              encryptionKey: key.Enc.A
              encryptedReadKeys: [key.Read.1]
              permission: admin
        snapshot:
          blocks:
            - id: root
        aclChanges:
          - userAdd:
              identity: A
              permission: admin
              encryptionKey: key.Enc.A
              encryptedReadKeys: [key.Read.1]
        changes:
          - blockAdd:
              id: root
        readKey: key.Read.1
      - id: A.1.2
        aclChanges:
          - userInvite:
              acceptKey: key.Sign.Onetime1
              encryptionKey: key.Enc.Onetime1
              encryptedReadKeys: [key.Read.1]
              permissions: writer
          - userAdd:
              identity: C
              permission: reader
              encryptionKey: key.Enc.C
              encryptedReadKeys: [ key.Read.1 ]
        readKey: key.Read.1
      - id: A.1.3
        changes:
          - blockAdd:
              id: second
              targetId: root
        readKey: key.Read.1
  - id: B.1
    identity: B
    records:
      - id: B.1.1
        aclChanges:
          - userJoin:
              identity: B
              encryptionKey: key.Enc.B
              acceptSignature: key.Sign.Onetime1
              inviteId: A.1.2
              encryptedReadKeys: [key.Read.1]
        readKey: key.Read.1
      - id: B.1.2
        changes:
          - blockAdd:
              id: first
              targetId: root
        readKey: key.Read.1
  - id: C.1
    identity: C
    records:
      - id: C.1.1
        changes:
          - blockAdd:
              id: third
              targetId: root
        readKey: key.Read.1
keys:
  Enc:
    - A
    - B
    - C
    - Onetime1
  Sign:
    - A
    - B
    - C
    - Onetime1
  Read:
    - 1
graph:
  - id: A.1.1
    baseSnapshot: A.1.1
  - id: A.1.2
    baseSnapshot: A.1.1
    aclHeads: [A.1.1]
    treeHeads: [A.1.1]
  - id: B.1.1
    baseSnapshot: A.1.1
    aclHeads: [A.1.2]
    treeHeads: [A.1.2]
  - id: B.1.2
    baseSnapshot: A.1.1
    aclHeads: [B.1.1]
    treeHeads: [B.1.1]
  - id: A.1.3
    baseSnapshot: A.1.1
    aclHeads: [B.1.1]
    treeHeads: [B.1.2, C.1.1]
  - id: C.1.1
    baseSnapshot: A.1.1
    aclHeads: [B.1.1]
    treeHeads: [B.1.1]