curl --request POST \
  --url https://api.exchange.coinbase.com/loans/open \
  --header 'Content-Type: application/json' \
  --header 'cb-access-key: <api-key>' \
  --header 'cb-access-passphrase: <api-key>' \
  --header 'cb-access-sign: <api-key>' \
  --header 'cb-access-timestamp: <api-key>' \
  --data '{
  "loan_id": "<string>",
  "currency": "<string>",
  "native_amount": "<string>",
  "interest_rate": "<string>",
  "term_start_date": "2023-11-07T05:31:56Z",
  "term_end_date": "2023-11-07T05:31:56Z",
  "profile_id": "<string>"
}'

{
  "loan": {
    "id": "<string>",
    "currency": "<string>",
    "principal_amount": "<string>",
    "outstanding_principal_amount": "<string>",
    "interest_rate": "<string>",
    "interest_currency": "<string>",
    "status": "loan_pending",
    "effective_at": "2023-11-07T05:31:56Z",
    "closed_at": "2023-11-07T05:31:56Z",
    "term_start_date": "2023-11-07T05:31:56Z",
    "term_end_date": "2023-11-07T05:31:56Z"
  }
}