{
  "manageEntity": {
    "action": "Save",
    "entityId": "1840360266",
    "entityType": "Track",
    "nonce": "0x6170e88022e1ea6276465b6fa5e93d16c64ba76524d4285f3af34ebf2c20f432",
    "signature": "0xaccf9ced24beda10946d6b4944d5be5bc23904d34568dda26eb28065e9039ac20d11686546c56b6d5cdbae91804460c6b0c6fdbf095d6b2bcb348d42d2f371b01b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}