curl --request POST \
  --url https://api.sumvin.com/v0/user/me/onboarding/advance \
  --header 'Content-Type: application/json' \
  --data '
{
  "step": "phone_verification"
}
'

{
  "_links": {
    "self": {
      "href": "<string>",
      "method": "GET",
      "templated": false,
      "description": "<string>"
    },
    "wallets": {
      "href": "<string>",
      "method": "GET",
      "templated": false,
      "description": "<string>"
    },
    "kyc-status": {
      "href": "<string>",
      "method": "GET",
      "templated": false,
      "description": "<string>"
    },
    "kyc-token": {
      "href": "<string>",
      "method": "GET",
      "templated": false,
      "description": "<string>"
    }
  },
  "onboarding": {
    "current_step": "<string>",
    "steps": [
      {
        "step": "<string>",
        "status": "<string>",
        "gated": false,
        "meta": {}
      }
    ],
    "is_complete": true
  }
}