{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4470",
    "entityType": "User",
    "nonce": "0x3b57c2e7401063f856663ab5b477cb30f7e45418fb3e22e44fc8993a19607f8a",
    "signature": "0x0b15bff0afd1e136d155c9a29e5492e7a7d8755b42951085eda046a1c802784c489e2ed1ae2e1bd6178788a7d1adf7bde3b1bf34660c79aa7b0b95e7385e39e91b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}