{
  "manageEntity": {
    "action": "Save",
    "entityId": "810432015",
    "entityType": "Track",
    "nonce": "0xccee1b880b4b7c6d93776df335fef80572d92c2b65af3b6955d79ebe380579cf",
    "signature": "0x90fa9ea845345b879720128504d1071d82b08aa379f3c3584ecaa28bdd617be95ac27c00b81ab7d1875cbd00c64f988f25682374330e978397bf9501d8e1cd151b",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}