{
  "manageEntity": {
    "action": "Save",
    "entityId": "764476694",
    "entityType": "Track",
    "nonce": "0x9796f6f4780528b0ac926d66c7e62351ebdb90e28750af614362d5e39ffd16ce",
    "signature": "0x6822de45994bb56079fce94660106703fd0459dd8561c47ad37442386115155e3c6fa46893c5f62d2d65de46c67ebc920a726fa3d541e616e2844e1669eb61071b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}