{
  "manageEntity": {
    "action": "Save",
    "entityId": "911776095",
    "entityType": "Track",
    "nonce": "0x034816c15270dd1d5f800899e415130dd4ed172bc3fd4ede627d3bfa373ab635",
    "signature": "0x299856fd267aa4c7b5667a11376aad9cbd40af7ddfde9500262ecc84d746c62c74194dc4a8177c424427a852a9f278d30caccdfd5cc0656b8eb33b2f279432a61b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}