{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "354403",
    "entityType": "User",
    "nonce": "0x6bc7345a6632102b15b417a7a4e28b3f3763c756631a5138f840f2439a78e057",
    "signature": "0xb2a9292e74eef92154c8798c04339a0215e14994242a9e6712a8542cfa82345a2a1d3999c482d14f0a37252e99906c863b7d315e5820465857e81b3c361990f31b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}