{
  "manageEntity": {
    "action": "Save",
    "entityId": "104620",
    "entityType": "Track",
    "nonce": "0x76c344c9854af24a9b931d09eef3bcf16e071071965def6ec232c62eb39219dc",
    "signature": "0x3a4964ec89523d28484d99187013f5ec913aeb4290e201dc24a4da261230c03d3c0004f1c1866a498476b05c3559e4503ead6454b2a23ab3c786db3b6c09646b1c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}