{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "499863176",
    "entityType": "User",
    "nonce": "0x886406c248e58a0b99f82775fe5cf327e5ef185244b281d1e6fa9b027424e7eb",
    "signature": "0x4d73ac1e68f9b1fcf0eee0cc7c5f6342cce9319452dea55963c33a15aafcbc6f3127310209e96a04daea849f8a7766eb86dd4b31f682fc9b731991aa676b1b171c",
    "signer": "0x5c51216FbbB9B7A562f11267f91f72A7be1e8DE3",
    "userId": "105826"
  }
}