{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "823613833",
    "entityType": "User",
    "nonce": "0xdee78ab52165f4602d975bcaccdfd84c2bea8a59fd246b6ece74cf86f178774f",
    "signature": "0xb3d3f7d36427430ecf561881a55a52b863616d91e589c351bb44d377effd81cb5fba21cc94621d65c8570a4b3f7c5adf8c451f471932a9856d75d9ab59f47ab81c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}