{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xa4b4f026b8e11cbb9a820518ff5d242721ac64e550e609e1744defbd6d6c80a6",
    "signature": "0x3dd9ad07a810180b268230139df3c4f136d8964344119d3eb7207dd45f13cee4444b5be7abb5c4a80fcd4aaf30000dd1ec603ea460c84a55896e31508f8ae2c81b",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}