{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf9fb1f2cc8ca55ec67771276c62b760872be2d8734322fa03027ad6504082bf8",
    "signature": "0xcd76a256bdb7b53c9dc7c29a1b3b4c942d683a4747289c101021b2d376b39162737e2915f7e21c2f6aafdc4b144bee4938e6f66879bf8d99c702d8aa0e1661fe1c",
    "signer": "0x8AD258A64f19f2702E1edE539A534733eae80a1D",
    "userId": "526915722"
  }
}