{
  "manageEntity": {
    "action": "Save",
    "entityId": "1597677323",
    "entityType": "Track",
    "nonce": "0x324a683317b2d4f008904c6012806b4f668f67393ed5a839abdb7f5a255504cf",
    "signature": "0x95fc8064101f002ae603bfb873ee9bac6da3d8ad52a15bf4eca7fdf296ad2dc0661aa73bb3c43f58c31d90819d64d330dc9424bfee16825f3412b0efda84934d1b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}