{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "301637",
    "entityType": "User",
    "nonce": "0x231836fb4e2b8eff61a5403041c2f7ec75a9953a8862a8a6957b4884d65c8af5",
    "signature": "0x91e53cc030673f91d01491f48d37be73c5495cc67ec1016eb72364718c9ebef07c008884ea2aae367f241a25f43934cb9422a3a439ffd34df3488db58c7fe4e61b",
    "signer": "0x99b5F46ae3978FB02A645f824e51700B327f1d6e",
    "userId": "97654"
  }
}