{
  "manageEntity": {
    "action": "Save",
    "entityId": "1082971",
    "entityType": "Track",
    "nonce": "0x5565e227f5339f1ba8141642dd4d3c47902bce9f8862858be167e07f37316714",
    "signature": "0x6630db0d3005e1348a6c3dc33cf45ddfb4ee69efd8014c5b007f15b3d580852514c9c198a3523043702f4a42f9d19b36f0459c6fedabbcc449c19f5d86b5a94f1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}