{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "354993",
    "entityType": "User",
    "nonce": "0xf03eee0449f2270a9f303e1b4df2ab9042036e605f506e2ae8e6d4a49ea3c2c6",
    "signature": "0x1b5ae82635b8e5c6cb1666e5b660c8a0d9909d4251f3c13a1e774968445eb7c3497eb38d4242a866a73628474b8e097efda7c4adc9a1b977eb790027d053a7591c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}