Generate S3 user credentials

Returns a new secretKey-accessKey pair corresponding to the user associated with the OAuth token that was submitted. The creation of a new key pair invalidates any previous key pairs for the user. A user account cannot generate S3 credentials associated with a different user account.

POST /s3/user/generate_credentials

{
  "id": {
    "id": "uuid"
  },
  "secretKey": "key",
  "accessKey": "key"
}