{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xff06ea13d56c8f9151c751fceaab6c23209b65f571f632101e1786ed5a97224f",
    "signature": "0x21a087b79ea6189b175587c1fba5434e5e47e98a87fbb19bed425e40cddd6e1e10b217a27afb8bfdd4c7841adaae1bdd31d495e1cfef6bbcb854d3e78fdb6dc21c",
    "signer": "0x3d6C654681Df058a8a557c47344f669987046Bf1",
    "userId": "604405128"
  }
}