{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "520958130",
    "entityType": "User",
    "nonce": "0x848c38f1cf8e5c88c491496120c7937bcbab8be94d48f8269b159969da6ff047",
    "signature": "0x524d292e262329b467cdecab58259498e2c0cff927692985bb4d7e1b2caab07c21c19fd94f440285c1253ff919e3401d203240b9ca2b32c061cc840c90afddf11b",
    "signer": "0x292eF57C1FAAc86008ab58D5116e0ba424C9189b",
    "userId": "721084704"
  }
}