I want to input binary data of an image to Web DAT

Could you tell me how to input binary data of an image?

I want to use Web DAT to use face API of Microsoft Azure.
I can input json data of an image URL to Input 0 of Web DAT and can input table data of header to input 1 of Web DAT. And this show the correct output data.
And I try to input binary data of the image to input 0 of Web DAT and change content type of the header to application/octet-stream from application/json, but the output is “Response 400: InvalidImage Decording Error, image format unsupported”.

This is the referense of face API .
westus.dev.cognitive.microsoft. … 0f30395236

What should I do? Would tell me it?