{
  "manageEntity": {
    "action": "Save",
    "entityId": "1045120361",
    "entityType": "Track",
    "nonce": "0x7292f675c2ff37726e5f38e34819055a490793957f61d73c0c637e4881f62eed",
    "signature": "0xaf5ac6853318ff4f77ead266d115043a377a278e8bd623fd87c451fca7d7a2c62cd354e7d661dad6e231c1961c7e3668f225ab683e04ef22d514615f620b36f21c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}