{
  "manageEntity": {
    "action": "Save",
    "entityId": "1761056016",
    "entityType": "Track",
    "nonce": "0xab55990436a3caaade5c84717a30aab6b58a5de8389f84b748edf551e1c9ecf1",
    "signature": "0x52a8bcac1504dd32cf8e8aab0dd67596c2c64e292e5211afdecac8d94747aabe5d7e87279695114573cd8c4d25e95ae1a13641d55e8e9f588b7e48b84134d0d31c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}