curl --request POST \
  --url https://api.example.com/partner/clover/customers/external_bank_account/{external_bank_account_id} \
  --header 'Content-Type: application/json' \
  --header 'X-API-NONCE: <x-api-nonce>' \
  --header 'X-API-SIGNATURE: <x-api-signature>' \
  --header 'X-API-SUBSCRIPTION-KEY: <x-api-subscription-key>' \
  --header 'X-API-TIMESTAMP: <x-api-timestamp>' \
  --data '
{
  "external_bank_account": {
    "bank_name": "<string>",
    "name_on_account": "<string>",
    "address_on_account": {
      "street_1": "<string>",
      "street_2": "<string>",
      "city": "<string>",
      "state": "<string>",
      "zip_code": "<string>",
      "country": "<string>"
    },
    "routing_number": "<string>",
    "account_number": "<string>"
  }
}
'

{
  "message": "<string>",
  "data": {
    "external_account_id": "<string>",
    "external_account_number": "<string>",
    "external_account_title": "<string>",
    "external_institution_aba": "<string>",
    "external_institution_name": "<string>"
  }
}