{
  "manageEntity": {
    "action": "Save",
    "entityId": "6076761",
    "entityType": "Track",
    "nonce": "0x31364353b5b9ff8ed60d2e525d91cc76b43fdd88120359a702f86375b9dd81d9",
    "signature": "0xa80ef8547280a4fdcf8cdee7fb16d2d46215a72920085440a1d6c7d7466b98170365f14d6e959d4a9018453925097b987565f1027768164b818ebb24911626bf1c",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}