{
  "manageEntity": {
    "action": "Save",
    "entityId": "1082670799",
    "entityType": "Track",
    "nonce": "0xd0bf8e438cc6fb66536e554d172f5622114883fd8e2d6d3d44912a9c12bf0e5b",
    "signature": "0x0d041c041247ca0f3fc611beac7518f9b4c3f3ed5dbc6d5d91b01001322f23252c1da7fcf8b796da70bc2824ceda921a9d7f4630167fc12e5e021bc804624f311b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}