{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "203752",
    "entityType": "User",
    "nonce": "0xef8d1f0397528ce1ec4a64c43f80900df94523c1d70753b790f4d79d1fbce3d9",
    "signature": "0x1d16441147cd756d64a2074af8cabe1194adc19b2b7a081cd594e3636a4852c035852927acacea09b8a2c4676e24c3bcae1878dcb04206883fc4a0bb3b7044261b",
    "signer": "0x3CEbf9bfE1b24355cBC348701860d601E226Dfbb",
    "userId": "172240066"
  }
}