{
  "manageEntity": {
    "action": "Save",
    "entityId": "1796445044",
    "entityType": "Track",
    "nonce": "0x51bacce9f817f79d86c022914b8b4827615dc41600830d2b75957103e3d50b50",
    "signature": "0x9dc8f6c6c3c7e8e74b15b0b4887dfc959d6587cdb2b3ff464cc67e2aa9ca054403ef5f89d57e6edbc219749a3949dc218d7daeef64a4f981ce3dc386e605d30a1c",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}