{
  "manageEntity": {
    "action": "Save",
    "entityId": "2013567547",
    "entityType": "Track",
    "nonce": "0xd35f218457d98ce6b38259eeb5d472ce54d565b5492463e0c7fd775e108c1b29",
    "signature": "0x7ede030787b10a53ef7c3a4b6d70a7cc4316a377b5c263342f72e80b7671af0209066fb70af54c7d32cd4c3bf6d53823a26a8bce9b2d7506237dad3db2b1ef951b",
    "signer": "0xC35123bF05ca0B3A7B333c53E47bcd9f9DA864d4",
    "userId": "33896318"
  }
}