{
  "manageEntity": {
    "action": "Save",
    "entityId": "135772",
    "entityType": "Track",
    "nonce": "0xdecbc6339ab99f437a6c00710ed9a452af390c70d036b40c4cc3b855433ea225",
    "signature": "0xb4cce1e23e41030f50b2c589b8d6dc52b142e422d6a3a5cbfc79c7e408b4d2267bc08a090b8e8f98d977c6215ce499b37422de36ae11136447052a50ce15c5ec1c",
    "signer": "0x7eBAab495a64FAea1f04dc59ff804bf939da7B12",
    "userId": "709077025"
  }
}