{
  "manageEntity": {
    "action": "Save",
    "entityId": "240302",
    "entityType": "Track",
    "nonce": "0x17a5362d4cce4c4198aa179fc59f291f6dc305a34bf8e803d9d1e06d71358d0c",
    "signature": "0x1132f906d87cf1b08f43d9cde8c861d5c8a10f382660182032bf718dd370ba800542cc620364516e94e3031671655218326fa8322bcbe3290d9f8b5b8ca5f5dc1b",
    "signer": "0xD37b1C27752eF147a8b887Bf5F0FbE628dB0ddEC",
    "userId": "504552907"
  }
}