{
  "manageEntity": {
    "action": "Save",
    "entityId": "1358307667",
    "entityType": "Track",
    "nonce": "0x26fb2d92d6035f71d2f829ee7f4fd66110d4fa081299e455d27208b92849b5c4",
    "signature": "0xb2c7c22c7c2047ddd9d9c8196e653c2f1b3e507e648d4b29d9e82135f4a3e08e1903493176539d200f452ff097dbb74baac1ab9049d7cce7968bcee0a6daf38b1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}