{
  "manageEntity": {
    "action": "Save",
    "entityId": "327264782",
    "entityType": "Track",
    "nonce": "0xb1460fdaa7f71865c99e7dc5ecc51723311ea94d21da1df58f376f3010afa6d6",
    "signature": "0x0f1429d212f10445e6f36772588b58f3d64b394b91deed048d11959e7b1190354133d0e4da2d4c45783c884828890de37044c9c9d12b8b4f35861ac4dfe63e501b",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}