{
  "manageEntity": {
    "action": "Save",
    "entityId": "1820806676",
    "entityType": "Track",
    "nonce": "0xdef8f785b64086bc851ffa4b0e22608638b9154af7d7e8a86d57c6417262e6ad",
    "signature": "0x2a9a7086f8e368d1a9b29e8d949cc14ae3bcc554e5ef7678eacebf894ef778da342df147584d703d58d5fb65eedee5a3326a15a5e8ae30f224996fdaea27218e1b",
    "signer": "0x22AC4e184Dc6B3f1F286b53b22E2D65931EcfEa8",
    "userId": "851552461"
  }
}