{
  "manageEntity": {
    "action": "Save",
    "entityId": "593691355",
    "entityType": "Track",
    "nonce": "0x04b3d97db00c65f20e48d8f652fe0057012773c1a9351d60826452f465d750c5",
    "signature": "0x0e185963ea68caf6758c13f80eba5236396d1b97532e2e0170cace9209d4cb4969826a8af496216c16e1c28b31c0e70dadbd9f189c38a0661731e44d61a861951b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}