{
  "manageEntity": {
    "action": "Save",
    "entityId": "994685",
    "entityType": "Track",
    "nonce": "0xa651fb4fba0590e56a12e6f8e6eea011bd4e09138aca8c0f576bbdabe2b9f6b6",
    "signature": "0xd3e2ea41c2582b6f62da6354efd60429eac0018956221fe4f3d91606f141c01620212b7faeb0405108754180610d489cda54462247c9bd6525d1508234a1373f1c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}