The workflow JSON
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{
"name": "REMAX \u2014 2. SignZen Proxy",
"nodes": [
{
"parameters": {
"httpMethod": "POST",
"path": "remax/enviar",
"responseMode": "responseNode",
"options": {}
},
"id": "4f0b541b-7268-4cb5-a77e-30b4602323e5",
"name": "POST /remax/enviar",
"type": "n8n-nodes-base.webhook",
"typeVersion": 2,
"position": [
368,
240
]
},
{
"parameters": {
"mode": "runOnceForAllItems",
"jsCode": "// Normaliza el body seg\u00fan la versi\u00f3n de n8n.\n// En algunas versiones el webhook expone el body en $json.body;\n// en otras, $json ES el body directamente.\nconst incoming = $input.first().json;\nconst body = (incoming.body && typeof incoming.body === 'object')\n ? incoming.body\n : incoming;\nreturn [{ json: body }];"
},
"id": "c0a57a5f-28c8-4000-9636-7512f171d8a4",
"name": "Normalizar body",
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
592,
240
]
},
{
"parameters": {
"method": "POST",
"url": "https://signzen-process-api.signzen-demo.com.ar/api/Processes",
"sendHeaders": true,
"headerParameters": {
"parameters": [
{
"name": "accept",
"value": "application/json"
},
{
"name": "Authorization",
"value": "Basic Y2NyZW9AZ3J1cG9scGEuY29tOjEyMzQ1Njc4"
}
]
},
"sendBody": true,
"contentType": "raw",
"rawContentType": "application/json-patch+json",
"body": "={{ JSON.stringify($json) }}",
"options": {
"allowUnauthorizedCerts": true
}
},
"id": "4241bdbb-53e9-4c15-849f-0e6f1063d949",
"name": "Llamar SignZen API",
"type": "n8n-nodes-base.httpRequest",
"typeVersion": 4.3,
"position": [
2832,
240
],
"continueOnFail": true
},
{
"parameters": {
"mode": "runOnceForAllItems",
"jsCode": "const item = $input.first();\n\nif (item.error) {\n const errMsg = item.error.message ?? JSON.stringify(item.json);\n const match = errMsg.match(/^(\\d{3})\\s+-/);\n const statusCode = match ? parseInt(match[1]) : 502;\n return [{ json: { statusCode, responseBody: JSON.stringify({ error: errMsg }) } }];\n}\n\n// \u00c9xito: item.json es la respuesta de SignZen directamente\nreturn [{ json: { statusCode: 200, responseBody: JSON.stringify(item.json) } }];"
},
"id": "dc76cbac-9b0e-44e8-9624-303d4336c003",
"name": "Preparar respuesta",
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
3056,
240
]
},
{
"parameters": {
"respondWith": "text",
"responseBody": "={{ $json.responseBody }}",
"options": {
"responseCode": "={{ $json.statusCode }}",
"responseHeaders": {
"entries": [
{
"name": "Content-Type",
"value": "application/json"
},
{
"name": "Access-Control-Allow-Origin",
"value": "*"
}
]
}
}
},
"id": "6765cabf-ce7e-40e4-9669-e30d249c2242",
"name": "Responder al Frontend",
"type": "n8n-nodes-base.respondToWebhook",
"typeVersion": 1,
"position": [
3280,
240
]
},
{
"parameters": {
"method": "GET",
"url": "=https://signzenv2-api.signzen-demo.com.ar/api/Templates/Search?GroupId={{ $json.groupId }}",
"sendHeaders": true,
"headerParameters": {
"parameters": [
{
"name": "accept",
"value": "application/json"
},
{
"name": "Authorization",
"value": "Basic Y2NyZW9AZ3J1cG9scGEuY29tOjEyMzQ1Njc4"
}
]
},
"options": {
"allowUnauthorizedCerts": true
}
},
"id": "a1000001-0000-0000-0000-000000000001",
"name": "Buscar Plantilla",
"type": "n8n-nodes-base.httpRequest",
"typeVersion": 4.3,
"position": [
1936,
240
],
"continueOnFail": false
},
{
"parameters": {
"mode": "runOnceForAllItems",
"jsCode": "const templateData = $input.first().json;\nconst body = $('Merge').first().json;\n\nconst templateKey = body.templateKey;\nconst templates = (templateData.data || []);\nconst found = templates.find(t => t.key === templateKey);\n\nif (!found) {\n throw new Error('No se encontr\u00f3 plantilla con key=\"' + templateKey + '\" para groupId=' + body.groupId);\n}\n\nreturn [{ json: { templateId: found.id, body } }];"
},
"id": "a1000002-0000-0000-0000-000000000002",
"name": "Resolver templateId",
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
2160,
240
]
},
{
"parameters": {
"method": "GET",
"url": "=https://signzenv2-api.signzen-demo.com.ar/api/Documents/Search?TemplateId={{ $json.templateId }}",
"sendHeaders": true,
"headerParameters": {
"parameters": [
{
"name": "accept",
"value": "application/json"
},
{
"name": "Authorization",
"value": "Basic Y2NyZW9AZ3J1cG9scGEuY29tOjEyMzQ1Njc4"
}
]
},
"options": {
"allowUnauthorizedCerts": true
}
},
"id": "a1000003-0000-0000-0000-000000000003",
"name": "Buscar Documento",
"type": "n8n-nodes-base.httpRequest",
"typeVersion": 4.3,
"position": [
2384,
240
],
"continueOnFail": false
},
{
"parameters": {
"mode": "runOnceForAllItems",
"jsCode": "const docData = $input.first().json;\nconst { body } = $('Resolver templateId').first().json;\n\nconst docs = (docData.data || []);\nconst found = docs.find(d => d.key === 'documento');\n\nif (!found) {\n throw new Error('No se encontr\u00f3 documento con key=\"documento\" en la plantilla');\n}\n\nconst enrichedBody = JSON.parse(JSON.stringify(body));\nif (!enrichedBody.documents || enrichedBody.documents.length === 0) {\n throw new Error('El body no contiene documentos');\n}\n\n// Inyectar documentTemplateId y limpiar campos internos que SignZen no acepta\nconst { fileName: _fn, ...cleanDoc } = enrichedBody.documents[0];\nenrichedBody.documents[0] = { ...cleanDoc, documentTemplateId: found.id };\n\nreturn [{ json: enrichedBody }];"
},
"id": "a1000004-0000-0000-0000-000000000004",
"name": "Resolver documentTemplateId",
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
2608,
240
]
},
{
"parameters": {
"conditions": {
"options": {
"caseSensitive": false,
"leftValue": "",
"typeValidation": "strict"
},
"conditions": [
{
"id": "cond-word-check",
"leftValue": "={{ (/\\.(doc|docx)$/i).test($json.documents?.[0]?.fileName || '') }}",
"rightValue": true,
"operator": {
"type": "boolean",
"operation": "equals"
}
}
],
"combinator": "and"
},
"options": {}
},
"id": "c1000001-0000-0000-0000-000000000001",
"name": "IF \u00bfEs Word?",
"type": "n8n-nodes-base.if",
"typeVersion": 2,
"position": [
816,
240
]
},
{
"parameters": {
"mode": "runOnceForAllItems",
"jsCode": "const body = $input.first().json;\nconst doc = body.documents[0];\nconst ext = (doc.fileName || '').split('.').pop().toLowerCase();\nconst mimeType = ext === 'docx'\n ? 'application/vnd.openxmlformats-officedocument.wordprocessingml.document'\n : 'application/msword';\n\nreturn [{\n json: body,\n binary: {\n docFile: {\n data: doc.base64,\n mimeType,\n fileName: doc.fileName || 'documento.' + ext,\n fileExtension: ext,\n fileSize: Math.ceil(doc.base64.length * 0.75),\n }\n }\n}];"
},
"id": "c1000002-0000-0000-0000-000000000002",
"name": "Preparar binario",
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
1040,
80
]
},
{
"parameters": {
"method": "POST",
"url": "https://circular-steady-hawk.ngrok-free.app/forms/libreoffice/convert",
"sendHeaders": true,
"headerParameters": {
"parameters": [
{
"name": "Authorization",
"value": "Basic YWRtaW46THBhMjMyOTE="
}
]
},
"sendBody": true,
"contentType": "multipart-form-data",
"bodyParameters": {
"parameters": [
{
"parameterType": "formBinaryData",
"name": "files",
"inputDataFieldName": "docFile"
}
]
},
"options": {
"allowUnauthorizedCerts": true,
"response": {
"response": {
"responseFormat": "file",
"outputPropertyName": "pdfData"
}
}
}
},
"id": "c1000003-0000-0000-0000-000000000003",
"name": "Llamar Gotenberg",
"type": "n8n-nodes-base.httpRequest",
"typeVersion": 4.3,
"position": [
1264,
80
]
},
{
"parameters": {
"mode": "binaryToJson",
"setAllData": false,
"destinationKey": "pdfBase64",
"sourceKey": "pdfData",
"options": {
"keepAsBase64": true
}
},
"id": "c1000008-0000-0000-0000-000000000008",
"name": "PDF a Base64",
"type": "n8n-nodes-base.moveBinaryData",
"typeVersion": 1,
"position": [
1488,
80
]
},
{
"parameters": {
"mode": "runOnceForAllItems",
"jsCode": "const pdfBase64 = $input.first().json.pdfBase64;\n\nif (!pdfBase64) {\n throw new Error('Gotenberg no devolvi\u00f3 datos PDF');\n}\n\nconst body = $('Preparar binario').first().json;\nconst oldFileName = body.documents?.[0]?.fileName || 'documento.docx';\nconst pdfFileName = oldFileName.replace(/\\.docx?$/i, '.pdf');\n\nreturn [{\n json: {\n ...body,\n documents: [{\n ...body.documents[0],\n fileName: pdfFileName,\n base64: pdfBase64,\n }]\n }\n}];"
},
"id": "c1000004-0000-0000-0000-000000000004",
"name": "Post Gotenberg",
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
1712,
80
]
},
{
"parameters": {
"mode": "append"
},
"id": "c1000005-0000-0000-0000-000000000005",
"name": "Merge",
"type": "n8n-nodes-base.merge",
"typeVersion": 2.1,
"position": [
1712,
240
]
}
],
"connections": {
"POST /remax/enviar": {
"main": [
[
{
"node": "Normalizar body",
"type": "main",
"index": 0
}
]
]
},
"Normalizar body": {
"main": [
[
{
"node": "IF \u00bfEs Word?",
"type": "main",
"index": 0
}
]
]
},
"IF \u00bfEs Word?": {
"main": [
[
{
"node": "Preparar binario",
"type": "main",
"index": 0
}
],
[
{
"node": "Merge",
"type": "main",
"index": 1
}
]
]
},
"Preparar binario": {
"main": [
[
{
"node": "Llamar Gotenberg",
"type": "main",
"index": 0
}
]
]
},
"Llamar Gotenberg": {
"main": [
[
{
"node": "PDF a Base64",
"type": "main",
"index": 0
}
]
]
},
"PDF a Base64": {
"main": [
[
{
"node": "Post Gotenberg",
"type": "main",
"index": 0
}
]
]
},
"Post Gotenberg": {
"main": [
[
{
"node": "Merge",
"type": "main",
"index": 0
}
]
]
},
"Merge": {
"main": [
[
{
"node": "Buscar Plantilla",
"type": "main",
"index": 0
}
]
]
},
"Buscar Plantilla": {
"main": [
[
{
"node": "Resolver templateId",
"type": "main",
"index": 0
}
]
]
},
"Resolver templateId": {
"main": [
[
{
"node": "Buscar Documento",
"type": "main",
"index": 0
}
]
]
},
"Buscar Documento": {
"main": [
[
{
"node": "Resolver documentTemplateId",
"type": "main",
"index": 0
}
]
]
},
"Resolver documentTemplateId": {
"main": [
[
{
"node": "Llamar SignZen API",
"type": "main",
"index": 0
}
]
]
},
"Llamar SignZen API": {
"main": [
[
{
"node": "Preparar respuesta",
"type": "main",
"index": 0
}
]
]
},
"Preparar respuesta": {
"main": [
[
{
"node": "Responder al Frontend",
"type": "main",
"index": 0
}
]
]
}
},
"active": false,
"settings": {
"executionOrder": "v1"
},
"versionId": "ffffffff-ffff-ffff-ffff-ffffffffffff",
"id": "remax-proxy-flow",
"tags": []
}
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About this workflow
REMAX — 2. SignZen Proxy. Uses httpRequest, moveBinaryData. Webhook trigger; 15 nodes.
Source: https://github.com/cristiancreo/signzen-remax/blob/8e5db6905f1ba905ee43485c0d20379de7a2ff5f/n8n-flow-2-proxy.json — original creator credit. Request a take-down →
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