{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x823da0e1ca9c586f6a78878caf5d4073bb9d37e6131b987da99e5bbe30e30095",
    "signature": "0xcf81bbfc3d337f7f0754cef8566f9f3b54327566ad151e8173bcdb0d2fbda5f603939e70dd85caed3712f3cb77a9095703be5a2f62091cdef0991a9a0f52b1ef1b",
    "signer": "0x319C2aEc33e193Cf3501B6Eab988C9104f8175Ef",
    "userId": "341968537"
  }
}