curl --request POST \
  --url https://api.interchange.io/api/v2/billing/iu-rate-card/accept \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "offerVersion": "<string>",
  "planId": "<string>",
  "idempotencyKey": "<string>"
}
'

import requests

url = "https://api.interchange.io/api/v2/billing/iu-rate-card/accept"

payload = {
    "offerVersion": "<string>",
    "planId": "<string>",
    "idempotencyKey": "<string>"
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({offerVersion: '<string>', planId: '<string>', idempotencyKey: '<string>'})
};

fetch('https://api.interchange.io/api/v2/billing/iu-rate-card/accept', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

{
  "data": {
    "id": "<string>",
    "acceptingCustomerId": 4503599627370496,
    "contractId": "<string>",
    "agreementDocumentId": "<string>",
    "tosVersion": "<string>",
    "rateCardId": "<string>",
    "rateCardPublicVersion": "<string>",
    "planId": "<string>",
    "planCode": "<string>",
    "planName": "<string>",
    "predecessorBindingId": "<string>",
    "offerVersion": "<string>",
    "termStart": "2023-11-07T05:31:56Z",
    "termEnd": "2023-11-07T05:31:56Z",
    "listCommitmentMinor": 4503599627370495,
    "listOverageUnitAmountMinor": 4503599627370495,
    "includedIus": 4503599627370495,
    "discountAuthorizationId": "<string>",
    "discountBasisPoints": 4999,
    "netCommitmentMinor": 4503599627370495,
    "netOverageUnitAmountMinor": 4503599627370495,
    "billingPeriodMonths": 1,
    "rolloverPolicy": {
      "capBasisPoints": 2500,
      "expiresAfterBillingPeriods": 1
    },
    "paymentTermsDays": 4503599627370496,
    "acceptedByUserId": "<string>",
    "acceptedAt": "2023-11-07T05:31:56Z",
    "activityTerms": [
      {
        "activityCode": "ACTIVATED_SOCIAL_ACCOUNT_MONTH",
        "displayName": "<string>",
        "iuAmountMilli": 1073741824,
        "billingPeriodMonths": 1,
        "includedBackfillMonths": 60
      }
    ],
    "effectiveRateCard": {
      "version": "<string>",
      "displayName": "<string>",
      "commercialOfferId": "<string>",
      "renewalBehavior": "PIN_EXACT",
      "adjustments": {
        "price": {
          "kind": "PERCENT",
          "basisPoints": 5000
        },
        "platform": null,
        "activityTerms": [],
        "setupCredit": null
      }
    }
  }
}

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

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

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

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

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