{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x1a2e602b380a11dbfdc730d0feadb866de99c1238e2e7c5bf7abfed851915e8a",
    "signature": "0x16e4a6e4d0175bb2445e59c7cf53233409ec1d3c71beb532b4276b0b01d0546c5299f34c2098f9124baa942700c05c66aea951b70e86fbde7a310f25cda62e191b",
    "signer": "0x303fD6F7668Ad0AD901434B85eF391E249785A2C",
    "userId": "179777073"
  }
}