{
  "manageEntity": {
    "action": "Save",
    "entityId": "1961844209",
    "entityType": "Track",
    "nonce": "0xd761a27bbe2611f3ddaaa058850ee0817f3ec44d0d3aa63194120ec6379fd1f9",
    "signature": "0x5a01f335e1ba96e4d485d6b1ebdd4bc0fcd3cef4bf8201d4c7904f32bd4c64b5679e163fa8201863998a623ab7aa458dc68dc8a5a770aacf7d0b33d4a41c29b31b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}