To use any of the above modules, you need to connect your WebMerge account to Integromat. If you do not have a WebMerge account yet, you can create one at Webmerge.me.
To connect your WebMerge account to Integromat, follow the general instructions for Connecting to services. After you click the Add button, you will be requested to enter your API key and API secret. To generate these values, login to your WebMerge account and in the top right corner under your Profile, click on API Access.
Click on Click here to create an API key! and in the next popup window, enter a name for the API key and click the Create key button.
Once you have copied your API key and API secret from WebMerge to Integromat, click on Continue and finish your scenario.
To create merged documents with images (e.g. signatures) via Integromat, you need to know the URL to the image or the base64 representation of the image (i.e. data:image/png;base64,<BASE 64 HERE>) so that Integromat can pass this information to WebMerge and the image can be embedded. Detailed information on how to build documents and embed images in WebMerge can be found under the following links:
Employ the WebMerge > Merge Data Route module, see https://support.webmerge.me/hc/en-us/sections/201531326-Data-Routing for further details.