{
  "manageEntity": {
    "action": "Save",
    "entityId": "791443179",
    "entityType": "Track",
    "nonce": "0xa70f8cd194648ec4781a52910b98772c5d4357282cde0643434843f916041e4e",
    "signature": "0x5fa3700f7a87b38d0c8f729ef0303a5039a4fa948ae2efca4dc0863b33115bc6441d60f51f47dc3eaa377e61c4262b709ce815fce47cdce936c7f2f671f85f131b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}