{
  "manageEntity": {
    "action": "Save",
    "entityId": "1097096",
    "entityType": "Track",
    "nonce": "0x9fcf10166b5c96bdc5760a12b7c447b1571fabc9f7247a20256fb1c5505ea3f0",
    "signature": "0x610468fd2b07e8e76a4ed1a63c00f71007f10e649a80b42816b6eade074798ba04f550490025544854b9084c2d9c1513d1c8f7f3e80a20e580beaeeab79487c81b",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}