Create/Update Custom Interest-free/Fixed installments Configuration

curl -X POST https://api.ecartpay.com/api/cards/msi-configuration \
  -H "Authorization: eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9..." \
  -H "Content-Type: application/json" \
  -d '{
    "commissions": [
      {
        "installments": 3,
        "minimum_amount": 500,
        "is_active": true,
        "fixed_installments": false
      },
      {
        "installments": 6,
        "minimum_amount": 1000,
        "is_active": true,
        "fixed_installments": true
        },
			{
        "installments": 9,
        "rate": 0.0999,
        "minimum_amount": 900,
        "is_active": false,
        "fixed_installments": false
    	},
      {
        "installments": 12,
        "minimum_amount": 2000,
        "is_active": true,
        "fixed_installments": false
       },
			{
        "installments": 18,
        "rate": 0.1899,
        "minimum_amount": 1800,
        "is_active": false,
        "fixed_installments": false
    	}

    ],
    "amex_fixed_installments": true
  }'

{
  "_id": "507f1f77bcf86cd799439012",
  "account_id": "507f1f77bcf86cd799439011",
  "gateway": "ecartpay",
  "is_active": true,
  "commissions": [
    {
      "installments": 3,
      "rate": 3.5,
      "minimum_amount": 500,
      "maximum_amount": 50000,
      "is_active": true,
      "fixed_installments": false
    },
    {
      "installments": 6,
      "rate": 5.5,
      "minimum_amount": 1000,
      "maximum_amount": 50000,
      "is_active": true,
      "fixed_installments": true
    },
    {
      "installments": 9,
      "rate": 8.5,
      "minimum_amount": 900,
      "maximum_amount": 50000,
      "is_active": false,
      "fixed_installments": false
    },
    {
      "installments": 12,
      "rate": 11.5,
      "minimum_amount": 2000,
      "maximum_amount": 50000,
      "is_active": true,
      "fixed_installments": false
    },
    {
      "installments": 18,
      "rate": 15,
      "minimum_amount": 1800,
      "maximum_amount": 50000,
      "is_active": false,
      "fixed_installments": false
    }
  ],
  "amex_rates": {
    "3": 3.25,
    "6": 6.25,
    "9": 8.25,
    "12": 10.25,
    "15": 13.25,
    "18": 15.25,
    "21": 17.25,
		"24": 19.25
  },
  "amex_fixed_installments": true,
  "created_at": "2024-01-15T10:30:00.000Z",
  "updated_at": "2024-01-15T10:30:00.000Z"
}