{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8ec94089f32fd285237b61e9bc07919dca01452717aa725c27a22e440998f1d9",
    "signature": "0x2f8255c4575c5468902728248c572d26f0cb5343cfe35001b0283c22033e6d285b31435fa932101dbd24b447aeb6e25432e44cfc9bc5cd13c83ad30b1d0180381b",
    "signer": "0xAC41057ec14D7A0f8CbF9F84C7fE65CfcF673CaF",
    "userId": "213018068"
  }
}