{
  "manageEntity": {
    "action": "Save",
    "entityId": "994694",
    "entityType": "Track",
    "nonce": "0x9fa5e92e2252b2f8eb0ce4d740cb6bb67e9ebc6113aa9c7642d7c7c0876bb96e",
    "signature": "0x6ef5c6b9f9531164dd00183f6636a14358abc5fa9188fb6b05c3d96884d16e7c0045705469de0773d0beba7cc43f387c0e6e512758d3f182f01d375cc0e421271c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}