{
  "manageEntity": {
    "action": "Save",
    "entityId": "1892770164",
    "entityType": "Track",
    "nonce": "0x09a0b6417ac846448a91050d33f91189e826ab3e8b023d8831b75876ef128627",
    "signature": "0x0c0ffa8eedbe962518d132cb83888ca059190d3c56f45c5223cd2b4aaee9f8432343cdbb3232105d48b07fe2f8f50164a4861eeade15ddb693ec6555d0787b951b",
    "signer": "0xd708949D0521A856Ca6eB44B4112bAEE59741ADD",
    "userId": "490478463"
  }
}