{
  "manageEntity": {
    "action": "Save",
    "entityId": "1068776013",
    "entityType": "Track",
    "nonce": "0x00fcb174c53de281d7124932d017e521b40664b919320e1cb06a6f68211b547a",
    "signature": "0xd3eda1292b255ff9e3b10f91a7f6614d0bd3fcd7678d5873fe82418a7c79d3c05b1cb8638a4791056d06aa733e981a5ca094fd595f2fcd6f2680ec17016763291c",
    "signer": "0xC35123bF05ca0B3A7B333c53E47bcd9f9DA864d4",
    "userId": "33896318"
  }
}