{
  "manageEntity": {
    "action": "Save",
    "entityId": "876216955",
    "entityType": "Track",
    "nonce": "0x8674e1ec2fb6044b88577295845ae152c2d461db488ad009f28d5c44607a146a",
    "signature": "0x326c174e8b663aff2f3bbd1977225669813fa543975e0be19be01fd1474ae90c1e40d2ccffcc48498559db63227def68fb602291c8dc10b645b1ad41b1c8526d1c",
    "signer": "0x6AAB6EaEa3f7F15750b649C269b0391dcB19dEeb",
    "userId": "92019297"
  }
}