{
  "manageEntity": {
    "action": "Save",
    "entityId": "1211787282",
    "entityType": "Track",
    "nonce": "0x7b9a70f73bed76fd0221de23c782217eea5ec826b7339f52da9a208ddb971e64",
    "signature": "0xaf981db87d36f5337edf34ceb44a8d7c5aad8293f56c2b568563561d0981f114551bee616c34b407c06764b0dd2257c431e00d2d85c2986ad32020dd2824a7701b",
    "signer": "0x36FE3d24284981316dB1bd72F676C29F45F0C339",
    "userId": "73554182"
  }
}