Start multipart attachment upload

This endpoint expects an object.

file_namestringRequired>=1 character

num_of_file_partsintegerRequired

entity_typeenumRequired

Allowed values:

entity_idstringRequiredformat: "uuid"

pathstringRequired>=1 character

mime_typestringOptional

project_namestringOptionalformat: "(?s)^\s*(\S.*\S|\S)\s*$"

If null, the default project is used

MultipartUploadResponse

upload_idstring>=1 character

pre_sign_urlslist of strings

401

Unauthorized Error

403

Forbidden Error

$	curl -X POST http://localhost:5173/api/v1/private/attachment/upload-start \
>	-H "Content-Type: application/json" \
>	-d '{
>	"file_name": "string",
>	"num_of_file_parts": 1,
>	"entity_type": "trace",
>	"entity_id": "string",
>	"path": "string"
>	}'

$	curl -X POST http://localhost:5173/api/v1/private/attachment/upload-start \
>	-H "Content-Type: application/json" \
>	-d '{
>	"file_name": "string",
>	"num_of_file_parts": 1,
>	"entity_type": "trace",
>	"entity_id": "string",
>	"path": "string"
>	}'