{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6439e75811a3c950a71c0a6197e189e977e0caed6866e8e11493ebe64d16eb8b",
    "signature": "0xfa51207c1e6259a595181aa25615960025bcbb51922a86cd4ca3511cc8dd24bb08294281da131a4e375cf5e7634f3eee47e3d330a0b90dee0bc6d5f1e6eb327d1c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}