Zoho Vault API: Create new Secrets

Hello,

I attempt to Post Secrets to the vault, since the encrypted entries are almost impossible to decrypt, since there is no documentation on how to decrypt them.

Like with the lack of documentation on how to descrypt, there are missing information regarding on how to create new secrets/post secrets. Source: https://www.zoho.com/vault/api/#create-a-new-secret

When I try to send JSON Informationen as a POST-Request I only receive the error message:

{
    "operation": {
        "result": {
            "error_code": "",
            "message": "Sorry, we are unable to process your request.",
            "status": "failed"
        }
    }
}

(those are just the example data from the documenation)

curl https://vault.zoho.com/api/rest/json/v1/secrets\
    -H "Content-Type: application/json;charset=UTF-8" \
    -H "Authorization: Zoho-authtoken ***My Token*" \
    -d 'INPUT_DATA
{  
 "secertdata":{  
  "password":"QAEMRCPqgln0Fh6W/LI=",
  "file":"2gKN1MWdgVk=",
  "username":"QAHvqSPqglkxJKnDgq4="
 },
 "secretname":"Secret Name",
 "classification":"E",
 "securenote":"QQHI6yPqglk=",
 "tags":"tags",
 "description":"description about secret",
 "passwordmodified":false,
 "policyid":"1000000000041",
 "secreturl":"https://tumbler.com",
 "secreters":["https://tumbler.com"],
"secrettypeid":"1000000004293"
}'

Did I misunderstood how to post the content or what is my mistake here?