{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "121458",
    "entityType": "User",
    "nonce": "0xe80ae7e3ff48da70cb6bee123c29c193fd78aa7183fde9f771347d7121be4f50",
    "signature": "0x001f01187deaa016dbeba081da984bd74f84baf1b7b56f2d20c87b74367ef22557a18a831a7e775e4a1dbecc235a8ff9478d582b14e2b65dda9b397a8f072f771b",
    "signer": "0x3CEbf9bfE1b24355cBC348701860d601E226Dfbb",
    "userId": "172240066"
  }
}