{
  "manageEntity": {
    "action": "Save",
    "entityId": "346534",
    "entityType": "Track",
    "nonce": "0xc4a0c449fd9df1248f9ffcea3606c3aba62f148a83764d109177c9f4b0087646",
    "signature": "0x0269a3a24ab832c0cac88fd7a823092426f68f5fce7d470264aabb97fef20b23758ae10074e8e0b1f69365cfa46f1c8680c034f16a0970e0e5c03d32be200ea81b",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}