The ingest answer (scope, collectedAt, status, and
lineage.sources when the write carried lineage).
Sends POST /v1/data/:scope with Authorization: Bearer <session token>
and X-Vana-Write-Signature, a Web3Signed proof over the stored
representation carrying the session's grantId as a signed claim. JSON
writes send data as compact JSON with Content-Type: application/json;
binary writes send the bytes with their Content-Type, X-Filename, and
sign binaryWriteSignedBytes. lineage is the record's top-level
lineage field for JSON and the lineage field of X-Vana-Metadata for
binary, so the proof covers it either way.
Write one record into a scope under an open write session.