Create Excel document with Cognito signature

I have cognito form where I have signature.
Then with flow I connect to create Excel, but the problem is I don't know how to place the signature in Excel.

I get this link when I connect the signature

{"Name":"Signature.png","ContentType":"image/png","Content":"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"}

Hi @Anto_Andrijanic,
If your signature is in an image format (it sure looks so), then you need to use a special field formatter to let the template know that it's an image you're inserting. Please use the following syntax:
{{signature}:picture}.
I can see that your signature is in JSON format and the image is probably stored in the "Content" property, so you need to pass only the Content property to the Plumsail Action.
Please feel free to get some more info here.
Also, please consider reviewing our example with Cogito Forms.
Please let me know if you need some more detailed instructions!