curl --request GET \
  --url https://api.example.com/v0/users/username/{username}

{
  "_links": {
    "kyc": {
      "description": "Submit KYC information",
      "href": "/v0/user/me/kyc",
      "method": "PUT"
    },
    "self": {
      "href": "/v0/user/me",
      "method": "GET"
    },
    "wallets": {
      "href": "/v0/wallets",
      "method": "GET"
    }
  }
}