action postmarkapp_create_sender_signature {
  label: "Create a Sender Signature"
  provider: postmarkapp
  method: POST
  path: "/senders"
  encoding: json
  input: {
    type: "object"
    properties: {
      "X-Postmark-Account-Token": {
        type: "string"
      }
    }
    required: ["X-Postmark-Account-Token"]
    additionalProperties: false
  }
  output: {
    type: "object"
    additionalProperties: true
  }
}