{
  "manageEntity": {
    "action": "Save",
    "entityId": "1001108091",
    "entityType": "Track",
    "nonce": "0xdaf7aa39c6cf8562143be508642ae0de5a934383d2a2afd70b51655b2d84bc1d",
    "signature": "0x2fe440ad5373c92afd8a9d7a9cb0e3f41cec477c1b17f0818dc16c863ed0c95c5a5bc323a074a2414cc1a36ae53de7d9e25463d6a4f66d0194138c05392f24571c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}