{
  "manageEntity": {
    "action": "Save",
    "entityId": "1700727681",
    "entityType": "Track",
    "nonce": "0x3af34b6410ff7703d4d10f6ecb308dcb3e87b401a0ac2e8689e61423483f8652",
    "signature": "0x0e95d0a05b4c12be85bb4feb84ba2cad4851e04b146dbb983fde0b6688cc97bd1d094c122badc35b2e90fd0d4bad2ab6e0dcf12f8ddb24ad7434357c4bc707941c",
    "signer": "0x5abad058d33E1C0C0A69d85BA3181678C1721765",
    "userId": "632918751"
  }
}