{
  "manageEntity": {
    "action": "Save",
    "entityId": "1419038337",
    "entityType": "Track",
    "nonce": "0x293a9f11e80fff8188b623b11d078438a25fa241d6fbf9ea54956e636a04890b",
    "signature": "0x96844a75a8a32c2128580901fdaba02d90c1159e9f35ab0454e9f6afea5c944037fe2b0d54349125f41f3985457889a48e11059da463bc6d524517ad8144e10b1b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}