{
  "manageEntity": {
    "action": "Save",
    "entityId": "834254431",
    "entityType": "Track",
    "nonce": "0x4d2642ab90cc57731a4569030880fac0bb39341ed9c4c6dbfeb08943d1935d59",
    "signature": "0xa506da55784b64398756e2d194ff5167da70eb88ed74e8a99ff168cb9bb9b7141107d3d755888a1eabf65416fbd4aed40eab72981f8edad3bf9e51308badb02d1c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}