curl --request POST \
  --url https://app.forecastable.com/api/v1/engage/campaigns/{campaignId}/start \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --header 'Idempotency-Key: <idempotency-key>' \
  --data '
{
  "senderUserId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "accountId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "to": [
    {
      "email": "<string>",
      "name": "<string>",
      "contactId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "linkedinUrl": "<string>",
      "slackUserId": "<string>"
    }
  ],
  "engageListId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "sendAt": "2023-11-07T05:31:56Z",
  "needsApproval": true
}
'

import requests

url = "https://app.forecastable.com/api/v1/engage/campaigns/{campaignId}/start"

payload = {
    "senderUserId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "accountId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "to": [
        {
            "email": "<string>",
            "name": "<string>",
            "contactId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
            "linkedinUrl": "<string>",
            "slackUserId": "<string>"
        }
    ],
    "engageListId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "sendAt": "2023-11-07T05:31:56Z",
    "needsApproval": True
}
headers = {
    "Idempotency-Key": "<idempotency-key>",
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {
    'Idempotency-Key': '<idempotency-key>',
    Authorization: 'Bearer <token>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    senderUserId: '3c90c3cc-0d44-4b50-8888-8dd25736052a',
    accountId: '3c90c3cc-0d44-4b50-8888-8dd25736052a',
    to: [
      {
        email: '<string>',
        name: '<string>',
        contactId: '3c90c3cc-0d44-4b50-8888-8dd25736052a',
        linkedinUrl: '<string>',
        slackUserId: '<string>'
      }
    ],
    engageListId: '3c90c3cc-0d44-4b50-8888-8dd25736052a',
    sendAt: '2023-11-07T05:31:56Z',
    needsApproval: true
  })
};

fetch('https://app.forecastable.com/api/v1/engage/campaigns/{campaignId}/start', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://app.forecastable.com/api/v1/engage/campaigns/{campaignId}/start",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'senderUserId' => '3c90c3cc-0d44-4b50-8888-8dd25736052a',
    'accountId' => '3c90c3cc-0d44-4b50-8888-8dd25736052a',
    'to' => [
        [
                'email' => '<string>',
                'name' => '<string>',
                'contactId' => '3c90c3cc-0d44-4b50-8888-8dd25736052a',
                'linkedinUrl' => '<string>',
                'slackUserId' => '<string>'
        ]
    ],
    'engageListId' => '3c90c3cc-0d44-4b50-8888-8dd25736052a',
    'sendAt' => '2023-11-07T05:31:56Z',
    'needsApproval' => true
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json",
    "Idempotency-Key: <idempotency-key>"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://app.forecastable.com/api/v1/engage/campaigns/{campaignId}/start"

	payload := strings.NewReader("{\n  \"senderUserId\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n  \"accountId\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n  \"to\": [\n    {\n      \"email\": \"<string>\",\n      \"name\": \"<string>\",\n      \"contactId\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n      \"linkedinUrl\": \"<string>\",\n      \"slackUserId\": \"<string>\"\n    }\n  ],\n  \"engageListId\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n  \"sendAt\": \"2023-11-07T05:31:56Z\",\n  \"needsApproval\": true\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Idempotency-Key", "<idempotency-key>")
	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://app.forecastable.com/api/v1/engage/campaigns/{campaignId}/start")
  .header("Idempotency-Key", "<idempotency-key>")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"senderUserId\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n  \"accountId\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n  \"to\": [\n    {\n      \"email\": \"<string>\",\n      \"name\": \"<string>\",\n      \"contactId\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n      \"linkedinUrl\": \"<string>\",\n      \"slackUserId\": \"<string>\"\n    }\n  ],\n  \"engageListId\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n  \"sendAt\": \"2023-11-07T05:31:56Z\",\n  \"needsApproval\": true\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://app.forecastable.com/api/v1/engage/campaigns/{campaignId}/start")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Idempotency-Key"] = '<idempotency-key>'
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"senderUserId\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n  \"accountId\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n  \"to\": [\n    {\n      \"email\": \"<string>\",\n      \"name\": \"<string>\",\n      \"contactId\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n      \"linkedinUrl\": \"<string>\",\n      \"slackUserId\": \"<string>\"\n    }\n  ],\n  \"engageListId\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n  \"sendAt\": \"2023-11-07T05:31:56Z\",\n  \"needsApproval\": true\n}"

response = http.request(request)
puts response.read_body

{
  "enrollmentJobId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "campaignId": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
}

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

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

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

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

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

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

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

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