{
  "manageEntity": {
    "action": "Save",
    "entityId": "188218690",
    "entityType": "Track",
    "nonce": "0x2e7a1c19d236d5174fced9f593124518e41d74a9a1ddd5a7f295d82936e8bb01",
    "signature": "0xf4c39e05cba092776629608f1e0433ae1168c97986f6d2d331be37c91c45f0f758910209710715e8692003cbd5f6cb8aee0e6c151ada9f4f4d8d8d37c926caac1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}