{
  "manageEntity": {
    "action": "Save",
    "entityId": "1193607432",
    "entityType": "Track",
    "nonce": "0xfd6426955fa51bdf2a8b5b9e6e5eae514a514d974605960e579e8c0476eb1cde",
    "signature": "0x481fa2cda1679461876d447e677d3eeb21dde00724856501996f10caa49d2e8d029c1d4b54733af890b6aa3e935e1f452d84780b7248823e5b1fd41f1d07970c1c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}