API Request Key Value Entry - Zoho FLOW Custom Function

API Request Key Value Entry - Zoho FLOW Custom Function

Hello,

Could someone help me about below API Request custom function of Zoho Flow script? How can I get params part between [ ]  in output as key and value? 

They have to appear as key-value but I couldn't get success it. Probably need some small change. It has to be appear as like attached format. You can see input and output logs below.

If someone help me about it, I will appreciate.

Thank you so much in advance.

INPUT

string trengo_whatsapp_template(string hsm_id, string recipient_phone_number, string ticket_id, string contact_name, string owner_name)
{
headers = Map();
headers.put("Authorization","Bearer xxxxxxxxx");
headers.put("Content-Type","application/json");
info headers;
info url;
//params
params = {"{{1}}":contact_name};
params = {"{{2}}":owner_name};
//body
body = Map();
body.put("hsm_id",hsm_id);
body.put("ticket_id",ticket_id);
body.put("recipient_phone_number",recipient_phone_number);
info body;
response = invokeurl
[
url :url
type :POST
parameters:body
headers:headers
];
info response;
status = response.toMap();
info status.get("read").toString();
return status.get("read").toString();
}


OUTPUT LOG

{
		"Authorization": "Bearer.xxxxxxxxx",
		"Content-Type": "application/json"
	},
	"https://app.xxxxxxxx",
	{
		"hsm_id": 45744,
		"ticket_id": 495003399,
		"recipient_phone_number": "+905304343960"
	},
	{
		"message": "Missing value for HSM param {{1}} (f8597599-84cc-46f7-92af-161e0725a1be)",
		"errors": [

		]
	},
	null 
]