{
  "manageEntity": {
    "action": "Save",
    "entityId": "1079508406",
    "entityType": "Track",
    "nonce": "0x363f7576d7b06eb1d9bc44cebfe41ae21dbbe3d51198896ec69be7e3bdd1f526",
    "signature": "0x5a9cd451bea1ec07b7281cc8176632c610d483ec6bd4c965d86df9d2d4d5b12a725bdabfb18e6526e60b328b5e00397c1e701b7010e9f3618f4eabbcc7dd8f2e1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}