{
  "manageEntity": {
    "action": "Save",
    "entityId": "1312308941",
    "entityType": "Track",
    "nonce": "0x2aeda99f7ba5b5deab48954f2272b1745c3e5357fea570c956f33bbaf45f4c0d",
    "signature": "0x3be471c5570de54967d8ce1496b6741da93f28e543bb2a999f8489f511588e3b3e7fc77f51ead574dcff8027a51c5508ea2d76fefc12efb0969efacf99bdf41d1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}