{
  "manageEntity": {
    "action": "Save",
    "entityId": "1077745",
    "entityType": "Track",
    "nonce": "0x58dddbd2569605bd23da57dd80d304ceb3f1407ccb6e7732bbbcd24e39324e57",
    "signature": "0x27653c1d9f4bece5c45354f618b0e9a06280aa7284f485dfaa93a8dd752e0cdc0e7e1d344cbae70e93f2b5d0c0bc019ab4bfe177635e72198c93fe775bc957781b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}