curl --request PUT \
  --url https://{organization}.rescueconsole.com/api/forms/submissions/{id}/assignees \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "person_ids": [
    "5c1d8e2a-7b41-4f0e-9a63-2d8f4b7c1e90"
  ]
}
'

const options = {
  method: 'PUT',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({person_ids: ['5c1d8e2a-7b41-4f0e-9a63-2d8f4b7c1e90']})
};

fetch('https://{organization}.rescueconsole.com/api/forms/submissions/{id}/assignees', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://{organization}.rescueconsole.com/api/forms/submissions/{id}/assignees"

payload = { "person_ids": ["5c1d8e2a-7b41-4f0e-9a63-2d8f4b7c1e90"] }
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.put(url, json=payload, headers=headers)

print(response.text)

{
  "submission": {
    "id": "<string>",
    "form_id": "<string>",
    "answers": {},
    "status": "new",
    "submitted_at": "2023-11-07T05:31:56Z",
    "animal_ids": [
      "<string>"
    ],
    "submitter_name": "<string>",
    "submitter_email": "<string>",
    "notes": "<string>",
    "reviewed_by_person_id": "<string>",
    "reviewed_at": "2023-11-07T05:31:56Z",
    "converted_to_type": "<string>",
    "converted_to_id": "<string>",
    "converted_how": "created",
    "decision": "approved",
    "decided_at": "2023-11-07T05:31:56Z",
    "decided_by_person_id": "<string>",
    "decision_note": "<string>",
    "held_at": "2023-11-07T05:31:56Z",
    "hold_reason": "<string>",
    "application_id": "<string>",
    "updated_at": "2023-11-07T05:31:56Z",
    "form_title": "<string>",
    "form_slug": "<string>",
    "form_kind": "adoption_application",
    "application_status": "<string>",
    "application_stage": "<string>",
    "application_stage_label": "<string>",
    "assignees": [
      {
        "person_id": "<string>",
        "name": "<string>"
      }
    ],
    "animals": [
      {
        "id": "<string>",
        "name": "<string>",
        "species": "dog"
      }
    ],
    "decided_by_name": "<string>"
  },
  "fields": [
    {
      "field_key": "<string>",
      "label": "<string>"
    }
  ],
  "can_write": true,
  "can_decide": true
}

{
  "error": "house_trained must be 1, 0 or null (not assessed)"
}

{
  "error": "house_trained must be 1, 0 or null (not assessed)"
}

{
  "error": "house_trained must be 1, 0 or null (not assessed)"
}

{
  "error": "house_trained must be 1, 0 or null (not assessed)"
}