{
  "manageEntity": {
    "action": "Save",
    "entityId": "1632855339",
    "entityType": "Track",
    "nonce": "0xef7288702ec1f26caf92fb5c0c7dea1b499ac5c4bd9b3eede856e833ee6b5661",
    "signature": "0x674f33d9cee9ff863ff88a600cead244e241cac8bf96694a73dab57cf99b070f6275fd2e0ea35606b8c57926417e1a6dfcc14d093f3879577560ec47601f15c51c",
    "signer": "0x6802Fe39C5FA9f99ac1Aa32F164982185A3E70ea",
    "userId": "152482938"
  }
}