{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "391242",
    "entityType": "User",
    "nonce": "0x4496aca2ea12f9831ffeba4bb4d427ef7e4ed9722462f3dfaf78e1678b1a4b88",
    "signature": "0x2bdd309985ac8d5b50ac4f913b921b30741d218ed6dffff42d61930498fae58208c0f88de60715afa868a8745ee04d19222ebc3974b7da46c25d6df781dcbbe41b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}