{
  "$schema": "https://json-structure.org/meta/core/v0/#",
  "$id": "https://raw.githubusercontent.com/api-evangelist/epa/refs/heads/main/json-structure/cip-service-start-permanent-identifier-structure.json",
  "name": "start_permanent_identifier",
  "description": "NHD flowline permanent identifier string value from which to begin the navigation.  Permanent Identifiers may manifest as text forms of the NHDPlusID or as 40-byte guid values.",
  "type": "string",
  "maxLength": 40
}