How to update WooCommerce PayPal Checkout Gateway account via REST API

I use PP checkout,

I tried https://woocommerce.github.io/woocommerce-rest-api-docs/#update-a-payment-gateway with id “ppec_paypal” but with my input. I got 200 response but it doesn’t work.

“api_username”: {
“id”: “api_username”,
“label”: “Live API Username”,
“description”: “Get your API credentials from PayPal.”,
“type”: “text”,
“value”: “**********”,
“default”: “”,
“tip”: “Get your API credentials from PayPal.”,
“placeholder”: “”
},
“api_password”: {
“id”: “api_password”,
“label”: “Live API Password”,
“description”: “Get your API credentials from PayPal.”,
“type”: “password”,
“value”: “**********”,
“default”: “”,
“tip”: “Get your API credentials from PayPal.”,
“placeholder”: “”
},
“api_signature”: {
“id”: “api_signature”,
“label”: “Live API Signature”,
“description”: “Get your API credentials from PayPal.”,
“type”: “text”,
“value”: “*************”,
“default”: “”,
“tip”: “Get your API credentials from PayPal.”,
“placeholder”: “Optional if you provide a certificate below”
},
Any help with request body.

Regards
deoshike