{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "394368",
    "entityType": "User",
    "nonce": "0xffcc9c45982e2f95f8a0685bc2dc17a954667f9fa20a6241bacb5a807233567f",
    "signature": "0xa8d7a818859d58823a1f103e1814acb32a6dbfb17aa7012f20948856e0f5994a4255b170cfe59c7031feb2efb28bd15e1066496c5607499894dc38d6959d457a1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}