{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1416",
    "entityType": "User",
    "nonce": "0x8fbf0545c27d60676ceef28924960e554c0a7d5142c32c0dddf2b9ba63f12982",
    "signature": "0x539c23fd473369ed1fe0aeaf7d22485a2523ddd8925c9d5d8241d91941f9030354809c8c49b8af337d476103a3339501561bc855198389efaefb043592286d561b",
    "signer": "0x243f92B83d056f818b9b95664A8B7A86805A3E71",
    "userId": "111448"
  }
}