{
  "manageEntity": {
    "action": "Save",
    "entityId": "47143",
    "entityType": "Track",
    "nonce": "0xb4bd98dc81ba12f4dcb28a9f51191d5fb1791ffaeae8cee97cbda10f281b9274",
    "signature": "0x7a944973b30fd4811b5fbbd0620e0474a1edbd61ace2cdb397503e0544eff7af7d6b35e413eeb085c7627649b8a306f49d5d918bf8038d50ad8b5003bf7449d51b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}