{
  "manageEntity": {
    "action": "Save",
    "entityId": "1156993580",
    "entityType": "Track",
    "nonce": "0xc82a806f231019b2dc8b80bf0c2a0b605f83a90be016c4a1a25bae0e9313d47f",
    "signature": "0x6f10019ab6ba0d3ea9b22a40395436bd00c6b22c6f5f36e17821fe1eca64577520e6b294fd0aa9656ded04d6c1e86046ec73f94bca3e79af196630dee2ee3fee1c",
    "signer": "0x4D8EDeF47b57f98c89BDFf851267B0327BE4cD05",
    "userId": "5307724"
  }
}