Webservice call to pull document from Appian KC?

My requirement is- through a webservice call need to pull the document which is uploaded or being maintained in Appian knowledge center. Document size would be between 500KB to 1000KB
I am only aware about calling a Process Model through Webservice call and not aware of how to pull the Appian contents/documents from Appian. Can anyone help me on this. Thanks in advance

OriginalPostID-226569

OriginalPostID-226569

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