{
  "manageEntity": {
    "action": "Save",
    "entityId": "1797641546",
    "entityType": "Track",
    "nonce": "0xdb6d4f6b6d3b20b5668529c15ff2e5e31ac8df50f3faf9bcae618c36a2763a1d",
    "signature": "0xa24cac5db8cd407a003f9f9782a939faddda58e86a899a8d1e8682b3b3480f173d06e3b263724aea46b20bb1d9f4363b4b154e16d7519bda7aff34e9c3e266b41c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}