{
  "manageEntity": {
    "action": "Save",
    "entityId": "1826137868",
    "entityType": "Track",
    "nonce": "0x7b4b54affd6425b7fc72485b641a0152d6893010d098733d26afa47d22cd036a",
    "signature": "0xd20828fe494a7921b96f23f3d6a4aeebe042843ea9770859f19c1897b28683fe3a490411f3a30acd361681d317f643a14f568f173ed35d3cf9441309d4a5535d1b",
    "signer": "0x84F390506850fa910A54A53e23c21DF4eA8742b0",
    "userId": "263559118"
  }
}