{
  "manageEntity": {
    "action": "Save",
    "entityId": "922555",
    "entityType": "Track",
    "nonce": "0x19f01b1f7e843bb18d48d13e0557cc54396d16060a77592c3a92d972522383ec",
    "signature": "0x8ce7010302ffecaabb6f87a202e0c7a8274b6a6ce48f47a8599b6c4819e5b3a82b10a13e05b0080b621b7d98df07120084d264a86608eefbce5a1c61e5d36b2a1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}