{
  "manageEntity": {
    "action": "Save",
    "entityId": "801428367",
    "entityType": "Track",
    "nonce": "0xd898087b98e867a7d35283a0dcbff81d869d3cc2ba8c5070cfb2f9244116eb49",
    "signature": "0xabe74c88447475f5d0a56886f550180ec11294a0ca5c7d8b56150adff8cdd28c6e09a192945bb732cec3d9770e8b0bc619ae84759344d5b2d9015fc69f8145dd1b",
    "signer": "0xCD56CD20D13d544BAC40F8a1084291a812070e71",
    "userId": "181494"
  }
}