{
  "manageEntity": {
    "action": "Save",
    "entityId": "1017066008",
    "entityType": "Track",
    "nonce": "0x270bbf96544f0b7e1b63d58423dfd03380f61809ac40a8a619595c512cc90093",
    "signature": "0xb3af1a94d13de311d495a741b5cdc5555067a74a4dce232ed28b34b50537a4fb7474ee36a9feb5294db4a5d6558c72a4a5d15301c331509b61b18d62036893121c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}