{
  "manageEntity": {
    "action": "Save",
    "entityId": "988257",
    "entityType": "Track",
    "nonce": "0xa021a8744792b3ee42915747e80b52bb9823fcd854a0e4353b0dd150df422fc3",
    "signature": "0x6f1f12836da5a4b70bd78ac95478bbf8b473c89d7bfc986e058693a44087d9d94eab0bdb358a7940464e567d6be7470adf9780b2bdd32e1333eb9a8c141331f91b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}