{
  "manageEntity": {
    "action": "Save",
    "entityId": "51180",
    "entityType": "Track",
    "nonce": "0xef12346d699d430362433f7e33717199e45a1bcbd06e80dde60d64d55000c1cb",
    "signature": "0x80def17871e0c12a0f9ae18fd019928b8d0ca91ac646306bd973e792c18df692135ba9754605e20ccd6a4ef632a4f93c48874ce41f8355c6648fa53b280d89781c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}