Dynamic field (BsRead<u128>)

{
  "id": "0x271e3a48decdcbe3b0497a751d357461616bc7197a269d8d68b7bde6953ec1e4",
  "name": "549970632173309258978764051260956553172847535068837719921601641822829178725",
  "value": {
    "onchain_timestamp_ms": "1789258800156",
    "source_timestamp_ms": "1789258800000",
    "value": "77258998789939",
    "writer_digest": "Hi02hN8nAcfRfYaetrTZMNErjBkznnfMmvxS9eSTcAI="
  }
}