{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "355715",
    "entityType": "User",
    "nonce": "0x3bc5597de0c5323f9db670d6729776890a92ceb745db765653d05939297420d3",
    "signature": "0xfb180e7c1e1b1342be0951048ef030c5a81c3b970a7d308f740f359a7e2bd3e542baa3b9567fcecc1dfefc6f7387eabd823b988ce3d5dd4eec82d0591323f3211c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}