{
  "manageEntity": {
    "action": "Save",
    "entityId": "942918040",
    "entityType": "Track",
    "nonce": "0xb30afef1656bfcef4a2d6aa7abbfdfef2cf6fe83977b064ada9e4d03dbf5a35b",
    "signature": "0xfaebc23475c3b6e63e8c19aa19dde7b6c199b86695c0356f4d9ac4bbeb858b1233fd6dc22762d8c2cc922453fa26e579e7c98f6cfb9467cdb299c138574fb3d21c",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}