{
  "manageEntity": {
    "action": "Save",
    "entityId": "92570",
    "entityType": "Track",
    "nonce": "0xb9cf7f3fd92b14754e1f41c38b8f2ac27c11d43ab7fd639ee8b283b4d51145d1",
    "signature": "0xcc73b7833074f236c79110a519e52c71f1184efb59a2f230c181305bef97afbd5b7bac4612acab16f7091d012de296e85f22159c7ed8ae3308480b2216561f311b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}