{
  "manageEntity": {
    "action": "Save",
    "entityId": "998821242",
    "entityType": "Track",
    "nonce": "0x3283f9669337c7bc79a1024310fb2d358171c559230a149aa4d55b4092c1748a",
    "signature": "0xa7a03cd9272d3be2c728e7ee1d0fa55f2892f10e76d53a9bffd4f4c9bc3c861c11762db4f8fbfa572d7300f3909882e66b841e783d367c16276fa6206343ac5a1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}