{
  "manageEntity": {
    "action": "Save",
    "entityId": "564540425",
    "entityType": "Track",
    "nonce": "0xb697a113d1654ed76b094c3da35e191e481285d934772a6f9214babd3407af97",
    "signature": "0xcf19cf78e5c447f93444020559798d69cd1fd3de53f0d393e01bc410b741c3e947cd507c665d9e547f103c75e58cf9c04b384b32d4e748b136bad2b07ac9ae241b",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}