{
  "manageEntity": {
    "action": "Save",
    "entityId": "1848005119",
    "entityType": "Track",
    "nonce": "0xbd1112707fc3b7464820d28d0fbf5909d7415e2e033305473125eded717f2862",
    "signature": "0xbef6d814818a5c1cabd383f4a6f4e99f1c55753da9212a55e2cd035fa58b6fa0369201061013b1b26cf5eba2a2174d11e8256f9dd5628e5e63da869d32c2ecf21b",
    "signer": "0x5A6DCd6E22135e4225594900c17114A7dAD01964",
    "userId": "580576096"
  }
}