{
  "manageEntity": {
    "action": "Save",
    "entityId": "194856",
    "entityType": "Track",
    "nonce": "0x04e25087739f48c0a2d6d2a94e49e5f5b1e6f021a4cbc99bdd57435ceca46ae7",
    "signature": "0x2df14b5e649f8ae2be752fbe3266d7d48a7f435fead5c6959f10e11699b45be55266837e2c47fc05f58ff2773e46163cacff15f2e1227d629e6ceb8411de46da1c",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}