{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "65878",
    "entityType": "User",
    "nonce": "0xdf9793ed276e868b57d12ecee9eaea3bfee860acff79d37422e8d2cda40735eb",
    "signature": "0x8fa4bd185227018135aae968307fbfc98ca7c697ff3dd88bf73c0b0fa47c7c8d393ea454f3db58e12a049ac7de648513fb9f39455e5d54653128cbd754ad8f6c1c",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}