SSO callback

curl --request POST \
  --url https://api.wacht.dev/auth/sso/callback \
  --header 'Content-Type: application/x-www-form-urlencoded' \
  --data 'SAMLResponse=<string>' \
  --data 'RelayState=<string>'

{
  "status": 200,
  "message": "",
  "data": {
    "id": "123456789012345678",
    "created_at": "2024-01-15T10:30:00Z",
    "updated_at": "2024-01-15T10:30:00Z",
    "signin_attempts": [
      {
        "id": "<string>",
        "created_at": "2023-11-07T05:31:56Z",
        "updated_at": "2023-11-07T05:31:56Z"
      }
    ],
    "signins": [
      {
        "id": "<string>",
        "created_at": "2023-11-07T05:31:56Z",
        "updated_at": "2023-11-07T05:31:56Z"
      }
    ],
    "signup_attempts": [
      {
        "id": "<string>",
        "created_at": "2023-11-07T05:31:56Z",
        "updated_at": "2023-11-07T05:31:56Z"
      }
    ],
    "active_signin_id": "987654321098765432",
    "active_signin": {
      "id": "<string>",
      "created_at": "2023-11-07T05:31:56Z",
      "updated_at": "2023-11-07T05:31:56Z"
    }
  },
  "session": {
    "id": "123456789012345678",
    "created_at": "2023-11-07T05:31:56Z",
    "updated_at": "2023-11-07T05:31:56Z"
  },
  "errors": [
    {
      "code": "INVALID_CREDENTIALS",
      "message": "Invalid credentials. Please try again."
    }
  ]
}