Read immutable build, schema, and data release identity

{  "data": {    "releaseId": "string",    "dataSnapshotSha256": "string",    "releaseReportSha256": "string",    "buildReference": "string",    "buildArtifactSha256": "string",    "migrationHead": "string",    "openApiSha256": "string",    "policySha256": "string",    "contentFingerprint": "string",    "productionRevision": 0,    "validUntil": "2019-08-24T14:15:22Z",    "deploymentId": "string"  }}