{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "854498636",
    "entityType": "User",
    "nonce": "0xd241fb5a9ebe63f818ac989f9df443808720cca799be187db2b1c6a17f3d7690",
    "signature": "0xb7e389c605c2f8666d4b47664bbed11b96d9f226e9a2a4851523c8ec5b1a16e8032bb8fc248ce6692850397102ea64f09628dd8c13d1c32f60734cae94c31bc71c",
    "signer": "0x87FC3581f96D45b347BB39E15f25079950C5Cc27",
    "userId": "339826419"
  }
}