{
  "manageEntity": {
    "action": "Save",
    "entityId": "166357115",
    "entityType": "Track",
    "nonce": "0x347dcae5543b5e1b5f630161e4207c9e54b40d4c382b6807e80c2a12e4c0c4d2",
    "signature": "0xab2936cda1a244309387a518090a31c8ea17fc542d395f75ba0dbe1e7bb97aee3f17e2999b3b220084bad97d173057314785757fb5c7afe88890fbd7aaa1a3961c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}