{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x36e8b5bd96ff98bd086dc8a08e48b6da0f20c679868aec74d9aed8e7113fbb71",
    "signature": "0x7e62dc77eec7181e1b2bd25ffbfa50c69f13b50dcabecc77150b2131b614e96d378bbbd64b24658c2975726fed705f3a0139b5e482f399c20ab1352d50649eb01c",
    "signer": "0x4237dD047F4b63798150F0C5DFC310aCE561ffae",
    "userId": "547825870"
  }
}