{
  "manageEntity": {
    "action": "Save",
    "entityId": "1278209086",
    "entityType": "Track",
    "nonce": "0x9c5ae6c0c8186f17561fd226af1641dfa7fb627c7db49a7174ccb016affd03da",
    "signature": "0x57f4a43726c034ffba3c16c2876a799427ca758ebadc465a1158e6d0d9ae809d0fdc0067512105647ce98fa17a27505713f219ef31b8862c20120f802c75fe071b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}