{
  "manageEntity": {
    "action": "Save",
    "entityId": "832497",
    "entityType": "Track",
    "nonce": "0x613dbd2364e38c0dc9b9b28d134b9beb4605746b5071ba2dfeb945167dd1792e",
    "signature": "0xf1befc5a92fb5e882bca6779bbfad85a21584a570cfc1a6c17735887bb0e54bc3b2a97ea6bcc24b7f156c51c4b227e8f2a24c1dfcc23d96f32dfd9d22ab4c89f1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}