curl --request POST \
  --url https://api.{your-broker}.slate-labs.com/prop/journeys/grant \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "customer_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "template_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "reason": "<string>",
  "selected_addon_codes": [
    "<string>"
  ]
}
'

{
  "journey_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "account_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "login": "<string>",
  "phase": "<string>",
  "pending_payment_tx_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
}