{
  "manageEntity": {
    "action": "Save",
    "entityId": "2040386360",
    "entityType": "Track",
    "nonce": "0x5e987b2be658da964f7abcc07df5675187e7f7ac0da37928db4eb77982fd326c",
    "signature": "0xf5ab6ae822e873ff4e1cd8743abc1c8b6f3c9ce50034e585e97a0491c94f99c51e5eec86e6d3d3036ce91e7ae210de7c4d05674a2d7b920eddf7b77b69a0e6bd1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}