{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "203478",
    "entityType": "User",
    "nonce": "0x856f2fb36830577ec51813a0fe4e1527ed80f2d463631f0aae4472ef616e9f67",
    "signature": "0xb2e3168d910b4f87c4483765355de94e7d3d90f0bd045b482907c29954aa9d1f402fe5a99668ce85809b9b9b785302067b243b03b98872f1e7442910568cf36b1b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}