404 Could not find user with uid ...

I'm working off the postman api integration tutorial. I'm running into the following error with not finding my user. I've set up a new account and tried that api key as well from the admin.

{
    "messageKey": "error.notFound.userNotFound",
    "technical": "Could not find user with uid 'oWANv5sfiwk1'",
    "message": "The specified user cannot be found.",
    "code": 404,
    "name": "Resource Not Found"
}

I found that I'm getting the same error as another user who had url issues. I've attached screenshots. But here's my curl request result using Postman:

headers
"Authorization","Basic b1dBjQjVjNQ==",
Accept application/json

Body
file: cleaning_contract.pdf
payload: {"approvals":[{"id":"ExampleSignatureId","role":"Signer1","fields":[{"page":0,"top":200,"subtype":"LABEL","height":50,"left":100,"width":200,"id":"myLabelField","type":"INPUT","value":"Example label field value"},{"page":0,"top":100,"subtype":"FULLNAME","height":50,"left":100,"width":200,"type":"SIGNATURE","name":"ExampleSignatureId"}],"name":""}],"id":"sample-contract","name":"Test Document"}

curl -X POST \
  https://sandbox.esignlive.com/api/packages/ \
  -H 'Accept: application/json' \
  -H 'Authorization: Basic b1dQ==' \
  -H 'Cache-Control: no-cache' \
  -H 'Postman-Token: b40ef205-2895-428a-ad79-8c73bd6010bd' \
  -H 'content-type: multipart/form-data; boundary=----WebKitFormBoundary7MA4YWxkTrZu0gW' \
  -F file=@/Users/jackhoward/Downloads/postman_tutorial/cleaning_contract.pdf \
  -F 'payload={"approvals":[{"id":"ExampleSignatureId","role":"Signer1","fields":[{"page":0,"top":200,"subtype":"LABEL","height":50,"left":100,"width":200,"id":"myLabelField","type":"INPUT","value":"Example label field value"},{"page":0,"top":100,"subtype":"FULLNAME","height":50,"left":100,"width":200,"type":"SIGNATURE","name":"ExampleSignatureId"}],"name":""}],"id":"sample-contract","name":"Test Document"}'