{
  "manageEntity": {
    "action": "Save",
    "entityId": "165291",
    "entityType": "Track",
    "nonce": "0x00b26b07a81efe41c186bf97bbc6c4911e274ea082bd62f3d94ffe71df380254",
    "signature": "0x872867581db74e4b078a1f20cef26687fc098ab96308ca83fce6777516837df3515143a3d00a6e7dff1cdbf9ddbd0c9278511545f73129814d22609f9134072c1c",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}