{
  "manageEntity": {
    "action": "Save",
    "entityId": "1059101",
    "entityType": "Track",
    "nonce": "0x62787093d2f79615e07207c88eeaf1b76a746a86e27b1de165f365b7033b9cc5",
    "signature": "0xf68f9f439b12ba5c711460398e2ba28716aa13f032b37fae56226736bdb31d4e608624dcecc97dfc7061befbf3f01d3aa627aa02c1d935e2bab16fef5d69fe981b",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}