{
  "manageEntity": {
    "action": "Save",
    "entityId": "1362125747",
    "entityType": "Track",
    "nonce": "0xf3cab1a550631020931859e4dac1214c05bf5afb8cbc3cc48b3f95e07a374763",
    "signature": "0x81d58bedb1f10703f006b2f0ad27806f6e784d88fd4c90cb0ec5a32b77b07f2d44b75ea411ba05cc6096413740142ad0696da1be7ac80849eec9b656ede1d27f1b",
    "signer": "0xC35123bF05ca0B3A7B333c53E47bcd9f9DA864d4",
    "userId": "33896318"
  }
}