{
  "manageEntity": {
    "action": "Save",
    "entityId": "226106",
    "entityType": "Track",
    "nonce": "0x6a6c2e27f2207d83f53a8e239de72d22b4bad83faf3d861dfa7a422959c40f9c",
    "signature": "0xcc7e1bde45f9122537b6918d164f85f6cec45fa8967670aed55bcd81a13d80046ad3428b8b6f84f75f41d7db369e9a9f2915abc1f2368e41bda61a48dc953d651b",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}