{
  "manageEntity": {
    "action": "Save",
    "entityId": "1081741",
    "entityType": "Track",
    "nonce": "0x2cfa00c5467d6708b012da0c577e3d270fa207df154b7701f5afea234f2af038",
    "signature": "0x0565650340caef59601722c7c7d7d3e0833020047da41851afb5081a26bf147c20014d2bc54034df7bb4437c4c42509567e163b4ee0f5382a2be92f2627cf20a1c",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}