{
  "manageEntity": {
    "action": "Save",
    "entityId": "2028438133",
    "entityType": "Track",
    "nonce": "0xaabbf78d036b503348ebe01c8860b75cceff2b2b9c0d42994e01a63e6a9b518d",
    "signature": "0x5faad32de2d52cc1f688d0e34879253513fef40e7fe5c1a15d77b8d0dcc900061824d7ac10eaff49e35aef1f7583995de4a3089e4dc80cbc425850c8ddd0fa8d1b",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}