S3FileUploadPart

Fields

Field	Type	Required	Description
`number`	int	✔️	N/A
`chunk_start`	int	✔️	N/A
`chunk_end`	int	✔️	N/A
`checksum_sha256_base64`	OptionalNullable[str]	➖	N/A
`url`	str	✔️	N/A
`expires_at`	date	✔️	N/A
`headers`	Dict[str, str]	➖	N/A