{
  "manageEntity": {
    "action": "Save",
    "entityId": "1101599686",
    "entityType": "Track",
    "nonce": "0x83231f1358d28d33feb9222a2bdff40d0e3fd09afb3a216e00cae3338798276a",
    "signature": "0xf80de1e03c9e23166fdc8264c8bf8d134a7369f3a105f99b8c817b2d438737a81ca54dc7634d1386ff69a7b8d4afe633f9b1ede3768e4747f8b449dede06726e1b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}