curl --location --request POST '/open/sign/quick' \
--header 'Content-Type: multipart/form-data' \
--form 'file=@""' \
--form 'positions="[{\"type\": 0,\"coordinatePosition\": {\"unit\": \"1\",\"llx\": \"0.5\",\"lly\": \"0.5\",\"pages\": \"1\"}},{\"type\": 0,\"coordinatePosition\": {\"unit\": \"1\",\"llx\": \"0.45\",\"lly\": \"0.5\",\"pages\": \"2\"}},{\"apSealPosition\": {\"direction\": 1,\"offset\": 0.2,\"pages\": \"ALL\"},\"type\": 1}]"' \
--form 'sealId="101"'
{
"code": 0,
"message": "string",
"body": {
"signedFileUrl": "string",
"quickTId": "string"
}
}