{
  "manageEntity": {
    "action": "Save",
    "entityId": "186904051",
    "entityType": "Track",
    "nonce": "0xa6dbb762e06f8d9561c99e19bb27438bb4b4eecaa38b07735758a2365acc0b69",
    "signature": "0x312980e9c7b705fbe7624204900d3b28b7279a30b61e85902c00452bc38204ba4cbd6bdcfc1fd93c8bf6fbf2d0d2edd6f0000d46664b908816bd5e9c5b4c5d3d1c",
    "signer": "0xa8E11aa224d2579f5cbdb912866bCE84Eb10f9dD",
    "userId": "951616224"
  }
}