{
  "manageEntity": {
    "action": "Save",
    "entityId": "2013937587",
    "entityType": "Track",
    "nonce": "0x07caa76cf907db251cbdf619e0f00618218b13cf0629e09a05eef7d6beca923b",
    "signature": "0x228d3515a36168022d0f86e1d75a2aaec3faa70c2d7bc1df8c349daa52e6da0c1fc7cf573fd1d4b4c3e6f142e233c39de6162824b60e4e5c620165fbef24d7d11b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}