{
  "manageEntity": {
    "action": "Save",
    "entityId": "1117439908",
    "entityType": "Track",
    "nonce": "0x1e96659d0237fc7a5461dcc3de15a49277a88fbf1d021056b511ad7898c42194",
    "signature": "0x7040ad225932c2096763bdb84149816e24bc32a985d6d0b0e53f81f160c79be2334609320a599ab0ffa9e96b1a7bbae2faea7f74d776ac3d871eab94f46d385a1c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}