{
  "manageEntity": {
    "action": "Save",
    "entityId": "85164357",
    "entityType": "Track",
    "nonce": "0x5ae628904f47c9c2ecf9011dfb9f637c2e889ec176619f01638e63d97e59d5c4",
    "signature": "0xc743293aa928b1207e10cc39fae408ca683cbb8aa5f03aaaf01728b72049c13b3943d20dd6dd6cee8b9e0c0d6aa05b5f9e8069dedc2968a6a7c17da37584945d1c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}