{
  "manageEntity": {
    "action": "Save",
    "entityId": "1476765260",
    "entityType": "Track",
    "nonce": "0x73ae14c279c65e304b63e11470568cb000a1a70765c17ed41c672571560b2bde",
    "signature": "0x7e50ef5a8af73b9aa4e675e76cba76ba2edfaf6e4ae684afef2b8f32b13bbcd52710d0eedcf5f6d61e3323dc5cf8ca806458a5267c4cfebc74e17eb791f420d81b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}