{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "398",
    "entityType": "User",
    "nonce": "0x740b4a866751ac30931a651e2ed3025a31adc7b11526ab5cbf8753d384d66865",
    "signature": "0x18c9d5bc5a43ad3efcd4c84d3b3c1fd13c40c7069575e83d24749a5ccb6e3be924867409195cf400c4685acbcfc3d93acd5f5d5bb99c36ae9513863815b8688f1b",
    "signer": "0x3CEbf9bfE1b24355cBC348701860d601E226Dfbb",
    "userId": "172240066"
  }
}