{
  "manageEntity": {
    "action": "Save",
    "entityId": "141300181",
    "entityType": "Track",
    "nonce": "0xce1b08ae65fe373dcdd1d38c0549fd5102dd958918c5cb7743e4104eb0fdc0ae",
    "signature": "0xe3f747105e139639436556d85e407ff8985bd82a05d75ebbee5f19ae7997e4a13c004ba6703987bb147924aeddcb48162e7baeabf586aa2f243e0add84b792b61b",
    "signer": "0xBA5AD24686040Ace0a01DB9b1D6fA44055f88a5c",
    "userId": "140302"
  }
}