{
  "manageEntity": {
    "action": "Save",
    "entityId": "1462613341",
    "entityType": "Track",
    "nonce": "0x24626a4fff3132798a34f7d46ce48ef183f5b998960fa0539334960f0cdf11e5",
    "signature": "0x527f7dea36a9c8806537c56880ba7053c68c89123cec84b60292733668b9194f708ff7eb74492cd1a6cd938f7f824f7779af1962719be8ef8aa47ca856f178961c",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}