curl --request POST \
  --url https://sandbox.groundtech.co/v2/turnkey/activities/{activityId}/vote \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "action": "approve",
  "customerApprovalStamp": {
    "stampHeaderName": "X-Stamp",
    "stampHeaderValue": "..."
  },
  "turnkeyRequest": {
    "type": "ACTIVITY_TYPE_APPROVE_ACTIVITY",
    "timestampMs": "1782302400000",
    "organizationId": "turnkey-suborg-id",
    "parameters": {
      "fingerprint": "activity-fingerprint"
    }
  }
}
'

{
  "action": "approve",
  "approved": true,
  "resultStatus": "ACTIVITY_STATUS_COMPLETED"
}