{
  "manageEntity": {
    "action": "Save",
    "entityId": "625951195",
    "entityType": "Track",
    "nonce": "0x345e089e94944c7b92b437525f2c51b6350b1b901c36965e585c1e435fb639fd",
    "signature": "0x34de6158aa1f49dc79125abfd012f0571c278d8e81949fc0d8d005aaeadc0efc25f3de2ef3edc19844829c9c6b1b07e9621ccb4cde1023d35314a030283e5adc1c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}