{
  "manageEntity": {
    "action": "Save",
    "entityId": "681696",
    "entityType": "Track",
    "nonce": "0xa4d015016ac628b62dc60530a298df21b57fa527f7fc24b1e101fbb16fc39b33",
    "signature": "0xe8b01204a3be53a7fed7872cff754b9d6390b8e138739d6ecf66d49019e35bcb2ffc63e505229c536c367357259c019e56ddbfa58febb956c5f04b390cf4a6781c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}