{
  "manageEntity": {
    "action": "Save",
    "entityId": "1076294964",
    "entityType": "Track",
    "nonce": "0x8b6cc2d8d9ad37a94c75109988a81938501c685ca2e6b6717e9514f1f56135a3",
    "signature": "0xfc97e484eade8dffa4ee26d4ce376b9f69c38fb181f1bada94e175322ba01813178dd159b8d42067b4215b61eeaf59908e2485b3bd6c8c0b0e43f96fd078adff1c",
    "signer": "0xa16E21B675BCaB501e407E716d506F7a99896406",
    "userId": "613617474"
  }
}