{
  "manageEntity": {
    "action": "Save",
    "entityId": "2128409862",
    "entityType": "Track",
    "nonce": "0xfb7e458368140c614e2c291e4cb4733b56dcb8e2832a0acedd212bb4ea3df5e0",
    "signature": "0x08097593b45ad4f39e7b1c26fdfad990bc3901b667a42b47d3416a96d02f086a171bdd3d5d29cd994e2071926cf3338f81823b29eee75884b309eae6daa0179f1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}