{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "228777558",
    "entityType": "User",
    "nonce": "0x74c9c769583e44e41cc956c81cd9e6abc0282890197b918520a260c757203ce7",
    "signature": "0x2955df4d1bc7ad799c9315634e8c696ca3a6b3eb63f5b7f2a7e177312db305445c314f618bdf1d5d8514dbc7f74a170e6d7d704f7cfe04cba9319d3c105d91b21c",
    "signer": "0x54A7bEEa4225786D727D79eDe3df2AaB446aC63A",
    "userId": "757958666"
  }
}