{
  "manageEntity": {
    "action": "Save",
    "entityId": "927712",
    "entityType": "Track",
    "nonce": "0x4f49db027a340090dc902be9442fb1f9de4d3a73b59bf3d96e4e3d32ed02cf64",
    "signature": "0x14dc3d84415545716f4df502d8ca2b457a31076f4b6eebf0264b44336e10b8171dda57c5d5db7dbe4d074e9653ef25e9b74678c7b1900e34dd287aac583a310d1c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}