{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xdd1b4bf904bb759dbd8d3602f0e69bc77bf797e3cbc1359837afceec914e0386",
    "signature": "0x965a01ad3f999f645b9032697d86237a4c2692d1a4a9766750e290b230b07f0f2bb0c8120f7f49103758b2f730f3b105f0546e2320066951864d7e5a0f75d66d1c",
    "signer": "0x7e165b88E11B7c713F3E0aa26623b35E9f032872",
    "userId": "974456712"
  }
}