{
  "manageEntity": {
    "action": "Save",
    "entityId": "1696475097",
    "entityType": "Track",
    "nonce": "0xa7debeccb98af378fdd4f1a2f96076893a0a7dfe018caad8b7a8dd4aa0921090",
    "signature": "0x7b7cdc1cf9a27f575da9f04784b00e51683a71ad3a735b970948aa55b6c620de49c841241f283dddbd05b6af9cc4fc05fce43c1de6720617eeada9c0d86c99951c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}