curl --request PUT \
  --url https://api.tread-horizon.com/v1/companies/{company-id}/jobs/{job-id}/signatures/dropoff \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: multipart/form-data' \
  --form image='@example-file' \
  --form 'name=<string>' \
  --form lat=0 \
  --form lon=0 \
  --form 'phone=<string>'

{
  "data": {
    "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "lat": "<string>",
    "lon": "<string>",
    "image_url": "<string>",
    "image_mime_type": "<string>",
    "image_name": "<string>",
    "signable_type": "<string>",
    "signable_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "name": "<string>",
    "phone": "<string>"
  }
}