{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x003ba1818efc3fb1305be07a10e6cc254832477e1a98a918d47f7c42d232211a",
    "signature": "0xb400fd63c4d498f829a34ee08fe4c79434596bc36a8907591d5d78bd5bd349730d77bb97b2f29b2b20837ebf342cceed2e585f77055d7b4fdbb9ef451e476acb1c",
    "signer": "0xc876F505cb8a680D38792C141903C53780bc3901",
    "userId": "384345140"
  }
}