{
  "manageEntity": {
    "action": "Save",
    "entityId": "1043256428",
    "entityType": "Track",
    "nonce": "0x2104d224548c7a65c0bddfad45828bd4ecd2d7aebb773f0feaeca287b43cb63e",
    "signature": "0x062ca16c413f330648e884528a5bf92f1f8b49cfbd6c6970ab3b7484292f0c082dd15b60585a357d7813578b7c0fd96baa574c0962de4169812866393fe99eb31b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}