{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "358998259",
    "entityType": "User",
    "nonce": "0x90af7d920bb121822af6cfa07c243439c39f54dfd2ac14fe9809c00043d31795",
    "signature": "0x8506fa9b9eee9aba2dd5eeed92648cbca4078a816769de9ca0944d8e0e3f47fd7ef4de2487f2c5d55fd7bb2e5f6bc7da22878aaba268ed48cf5a4daad79256221b",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}