{
  "manageEntity": {
    "action": "Save",
    "entityId": "1514152497",
    "entityType": "Track",
    "nonce": "0xbaac8cd83509c7bb03a04dfd39b0b97201ceb8f0d48700cad465af3528982499",
    "signature": "0x52b6e4d26604ccdc2bc494eef90d478801ea0f8b11651147690eaaa97d4c09414e647d39339db8ca80de3fbd5a8cd7f2ed1cab9886534ff03813b3612d95b96e1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}