{
  "manageEntity": {
    "action": "Save",
    "entityId": "2040972744",
    "entityType": "Track",
    "nonce": "0xbc1f757efd3de2ab7806406de2656d637d67276400d6bd80166ce22bc213bad3",
    "signature": "0x9a6f58df296e29649131134685e09290aa1aa72caaf2e766189fca0af18c6aa44589cbe9d61373ad3930325c8f3c56a9c8412b5689eb1c71e7e0a7d377ac29721c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}