{
  "manageEntity": {
    "action": "Save",
    "entityId": "20428",
    "entityType": "Track",
    "nonce": "0x700aef187d335eba75e992255ce949db4a99576183884c3d0266e561829ba3c4",
    "signature": "0x3e0bd3b8274ebcb6f5e362c60ddcd2c86d2dfaae1413700206d59a5b5a2aa8d1610b32279e45269ed9d1e471796177824fbb7848201392e13768ffbf5f7cdfae1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}