{
  "manageEntity": {
    "action": "Save",
    "entityId": "82436918",
    "entityType": "Track",
    "nonce": "0x5dd8498a366a91a0519c32adc83c1231ea7023140053e38fdc61f32eaed9046b",
    "signature": "0xda7d3095bc376bbb90a6e5efaa4bfb945b2d451cfebba9f202e97cc511d012514723accd1c6d86caa2f17eab72c25b5078aaae7b01dad061acd0fad227cb9e4e1c",
    "signer": "0x2F7db4C1AE3922aD0f32CEdED1870278dd17b64b",
    "userId": "467213409"
  }
}