{
  "manageEntity": {
    "action": "Save",
    "entityId": "1041101",
    "entityType": "Track",
    "nonce": "0x931d4904aa4ab3fae9ebd460c9e2857105cf6d4eb65ca953555700b2490be69e",
    "signature": "0xbd554d49f40a7d762e0aacdaee7fff49bfdcaaf2226d8a9e06b29828fc8f58ef2bd508d060b63a91f747bf1517566ecfee3f1af0580c558d3f96060f1ab1f7e11b",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}