{
  "manageEntity": {
    "action": "Save",
    "entityId": "1125739603",
    "entityType": "Track",
    "nonce": "0xe5cca1d26175c1c920bf30184c8ef1302dadef96dcf389ee1609ace245533825",
    "signature": "0x4d84873267a240bb8ed3d40df4dca42256ae9f708582b8c67f90c3e0286fd42825efa55b21f7ea9cdcd9b2a18a09c2c401f827e66104027822506b31780cdab51c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}