{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x8350bb4bf8c685017b0a1b42d3e976ea866f64c947724cf5db5fbff573c8d520",
    "signature": "0x870306dcb52a857e95f924436e0cc20741aed93a5d0eb0f7832b0bd14767bf31175b3c46afddfb49515bc313395630fe52b3fb104792783c92230c3736f13be61b",
    "signer": "0xa4A8a4853051b18e0f0f777693Ce34CF4bCe9385",
    "userId": "634886384"
  }
}