{
  "manageEntity": {
    "action": "Save",
    "entityId": "682961",
    "entityType": "Track",
    "nonce": "0x782578fd472671480d90567f7faaf805b79841c9956c40455169030f1211a670",
    "signature": "0x7c214f337858d266b9c399e53a6a3d6dd75e1cf891347ae6d87b5bfa2c44a78c5397c4e737f99513c9dde8290539bafb25549cd5dc64fcc5bbf3fab150d0f7971c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}