JSON string with structure
{
"referenceID": "string",
"user": {
"documentNumber": "string",
"firstName": "string",
"lastName": "string",
"phone": "string",
"email": "string",
"language": "string"
},
"documents": [{
"description": "string",
"checksumDocument": "string",
"annotationParameters": [{
"annotationText": "string",
"fontName": "string",
"fontSize": "integer",
"fontColor": "string",
"axisX": "integer",
"axisY": "integer",
"page": "integer"
}]
}],
"signInfo": {
"type": "string",
"algorithm": "string"
},
"groupDescription": "string",
"coverage": 0 ,
"certificateType": 0,
"vendorNumber": "string",
"publicKey": "string",
"urlCallback": "string"
}

Authorization value.