404 when trying to POST to assets/email/deployment

Hello All,

I am an experienced developer, but a n00b to Eloqua. I am building a service that recieves a POST from Eloqua, creates user accounts on external systems based on the form the fill out, and then sends an email with their connection information. I am able to get my base_url and create an email, but in both Postman and Python, everytime I try to send that email, I get a 404.JS

JSON

{ "type": "EmailTestDeployment", "name": "subject", "contactId": "666", "email": {    "type": "Email",    "id": "30585",    "name": "subject" }, "sendOptions": {    "allowResend": "true",    "allowSendToUnsubscribe": "false" }}

URL

https://secure.p01.eloqua.com/api/REST/2.0/assets/email/deployment