{
  "manageEntity": {
    "action": "Save",
    "entityId": "1227766270",
    "entityType": "Track",
    "nonce": "0xc4a927ea30a25663746fdcb91e9bbeeab43ad97422af50add37fe669f9728eea",
    "signature": "0xa52a0df2239d0dccb6286907150534df50f02b2dc1764c4160cddab0b62b807448ab5f3ab3ee2a03213703ff5100b9a3a505a58f74d57ba236efccd3d3e77bd51c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}