{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0x2fdeb105247d917f27fb4948470f8d8dd938b5a6ffca44145a4499616d8ba542",
    "signature": "0x1b5c31cdd4b15769709ca2c28f2d5801f30c5b7279b2b5b31566052aa86b7e3c0eaea85e625d07711dd9c55192d96b117e134ea663719657415ba1dce4f033aa1c",
    "signer": "0x81f60DEAd0cdA833Ad17fe7Ddd37b36E62630205",
    "userId": "132087202"
  }
}