{
  "manageEntity": {
    "action": "Save",
    "entityId": "798846471",
    "entityType": "Track",
    "nonce": "0x5f22e6c15ea6fc8803b8100b5113c8e5fbc423053bc1f319bff59545717756fa",
    "signature": "0xec0e0900432d12029ff67e92cfda0f5c3e6661ca22146c5936b088d42caaab5b5056c06a371852a8d3721bac019696079b238a7baa00dd5651bddf048bc783421b",
    "signer": "0x45C74e4f36E4e5064C5321eeED3748fD52B04eA8",
    "userId": "133970929"
  }
}