curl --request GET \
  --url https://api.financialdatapi.com/entities/{entityId}/observations \
  --header 'x-api-key: <api-key>'

import requests

url = "https://api.financialdatapi.com/entities/{entityId}/observations"

headers = {"x-api-key": "<api-key>"}

response = requests.get(url, headers=headers)

print(response.text)

const options = {method: 'GET', headers: {'x-api-key': '<api-key>'}};

fetch('https://api.financialdatapi.com/entities/{entityId}/observations', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

{
  "data": [
    "<unknown>"
  ],
  "meta": {
    "request_id": "<string>",
    "requestId": "<string>",
    "api_version": "<string>",
    "pagination": {
      "limit": 123,
      "cursor": "<string>",
      "next_cursor": "<string>",
      "has_more": true
    }
  },
  "requestId": "<string>"
}

{
  "error": {
    "code": "<string>",
    "message": "<string>",
    "request_id": "<string>",
    "requestId": "<string>",
    "details": "<unknown>"
  },
  "requestId": "<string>"
}

{
  "error": {
    "code": "<string>",
    "message": "<string>",
    "request_id": "<string>",
    "requestId": "<string>",
    "details": "<unknown>"
  },
  "requestId": "<string>"
}

{
  "error": {
    "code": "<string>",
    "message": "<string>",
    "request_id": "<string>",
    "requestId": "<string>",
    "details": "<unknown>"
  },
  "requestId": "<string>"
}