{
  "manageEntity": {
    "action": "Save",
    "entityId": "1444038006",
    "entityType": "Track",
    "nonce": "0x0b188c1e30ed5100a03934a72bef1f0166518acbf3e2dbfd6ad1e1be9d9a7902",
    "signature": "0x6b92a368f3207d49184ecbfde892cc9476f90a26da1b310f184a7cf4e14f62997bcc6559279706237d9556493b31a3d9271656ea7b5a9ee388c70e44748071e81c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}