{
  "manageEntity": {
    "action": "Save",
    "entityId": "98186846",
    "entityType": "Track",
    "nonce": "0x2761dab574174968c3fe51b7e9f86fe0ff9548d38d887b3df4fc4c73d82440a5",
    "signature": "0x3f66415a52ca57d66e8ca98b4356e594ec6ef3f784f98f02bb275ea00c6c817f6a18769262fcae18f4ea98b8dc384bbe253b2fe0e56e9c7e0b5f210d73d53f821b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}