{
  "manageEntity": {
    "action": "Save",
    "entityId": "1116805",
    "entityType": "Track",
    "nonce": "0x6816cb23eb0f3a37b8ad07bc3cdfccfb2fa7572909709c3a3832e881aaf4167a",
    "signature": "0xaf98dc9fcedcb5bbbafb435fdbf826d55b4d9b1d3795578af01ec600d76560893cae03bcd8aae96bee550d47b922fb9a7c13e56a9249894ec330801edf2900cb1c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}