{
  "manageEntity": {
    "action": "Save",
    "entityId": "2077694972",
    "entityType": "Track",
    "nonce": "0xfca7c5f9fe211ac4ad5b66dafe3cc756797ef2b868e70c750f2612bd64eef093",
    "signature": "0x88c168fba00ca8f358e5f260f4f2818e8498ce36347c17041789f77f8478ab8d211164a3870b5409d75a8baae17ea6f86b23fdcefef149599d0d77d3c2da6b681c",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}