{
  "manageEntity": {
    "action": "Save",
    "entityId": "2075237461",
    "entityType": "Track",
    "nonce": "0x97a37485414bb2ef17fce616f18fd8503f08749a9f0a586d515046c0b380182c",
    "signature": "0xebcbe584e7b30acb0722d6fad45568c824f194ddb232910ae471e93ccc690bb9319abc76808aa7104fd2d5332126d23d31262a5bf9e4b75063644b7f1728e4c01c",
    "signer": "0x6AAB6EaEa3f7F15750b649C269b0391dcB19dEeb",
    "userId": "92019297"
  }
}