{
  "manageEntity": {
    "action": "Save",
    "entityId": "1835726843",
    "entityType": "Track",
    "nonce": "0xcb5fdfb41812135b5169e333298e0ee5dca6f6b0ff9003b977dbdcdf639d2ff0",
    "signature": "0x11589c1841d188e575bc1529c22e2d423ddfa7328d13039026d6134f2fa02b8d6b2d26500ec99ebe382c4a7d8976124344a560d88a6aca49fca5918b7a0322431b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}