{
  "manageEntity": {
    "action": "Save",
    "entityId": "80979087",
    "entityType": "Track",
    "nonce": "0xb5870d4b30f86c6cecddac0cb7e48611b85c4191441a399e3e3c0ec1ca260501",
    "signature": "0x27da45264578a0e133d0bcf71f48ad0a7d1bf3da86e9d5fa57918dd072237c4b30b88959f8d1fc4c4cf014d4bca726a05024e67f64fa26065350cd6b0558aa221c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}