{
  "manageEntity": {
    "action": "Save",
    "entityId": "1510433561",
    "entityType": "Track",
    "nonce": "0x5fee2eb563264b91809e9b5eec4edae62b802ba2d38022c04bbf062e71a5e705",
    "signature": "0x98f4246c974b6a310d1b740a9a622f5394e3f586be85ba60dba20e7cd0aac90613f6e153b85c6d0922048ea521a610905903c1defc41d7a38aefc5c9ed495fc71c",
    "signer": "0x6AAB6EaEa3f7F15750b649C269b0391dcB19dEeb",
    "userId": "92019297"
  }
}